1965 Mustang SPLITR

One-of-a-Kind 1965 Mustang Fastback SPLITR

Mike and Jim Ring have always had a respect for the classics, but when it comes to their custom builds, keeping it “classic” is the last thing on their minds. Their newest vehicle, a 1965 Mustang Fastback, preserves the spirit of the ’65 ‘Stang, but is a far cry from the original with a sleek, modified body and modern amenities. Ringbrothers revealed this resto-modded Mustang dubbed “SPLITR” in the Flowmaster booth at the 2015 SEMA Show in Las Vegas to a crowd of fans and enthusiasts.

The Rings set to work altering the familiar pony car by trimming the bottom of the front fenders and extending the rocker panels forward to the bottom of the trailing edge of the front wheel arch. Then they took the rockers and extended them down by 1.5” and wrapped them under the chassis where they meet with a lower, flat secondary floor pan. This gives “SPLITR” a totally flat undertray (with the exception of the driveshaft tunnel) much like a modern racing car. They also gave this treatment to the rear of the car which hides things like the fuel cell. The body work was completed with a custom BASF Glasurit 90-Line Waterborne paint color named “Ford Race Red,” and then finished with a satin clear finish to help keep things from looking too polished.

Under the carbon hood, Mike and Jim reworked the engine bay to smooth out the inner apron to make room for a massive 427 cubic inch engine from Ford Racing. The engine is fed its diet of air and fuel through an elaborate custom airbox of the Ring’s design. The airbox is crafted from a combination of aluminum and Lexan which allows viewers to look down the throat of the throttle body and see the MSD Atomic fuel injection system. Power from the engine is fed back into a Tremec T56 six speed manual transmission by Bowler and filled with Royal Purple Manual Transmission Fluid to keep the transmission working at peak efficiency. To ensure the best driving experience, a Centerforce DYAD Twin-Disc Clutch was chosen for its smooth engagement and light pedal effort. Exhaust is funneled out by way of custom Ringbrothers headers with 1.5” primaries and into a custom exhaust system with Flowmaster Super 44 Mufflers.

All of “SPLITR’s” racy looks and massive power would be useless if the car didn’t handle, but that’s not an issue thanks to Detroit Speed Engineering. “SPLITR” uses DSE’s AlumaFrame front suspension system which is comprised of a cast aluminum cradle, custom-tuned steering rack, tubular suspension arms, and custom valved adjustable JRI coilover shocks. The rear is kept in line with Detroit Speed’s QUADRALink suspension system and custom valved JRI coilover shocks. Front and rear sway bars are also from Detroit Speed. Stopping power is provided by Baer with huge 6S Extreme calipers with 14-inch rotors front and rear. “SPLITR” rides on custom forged HRE Wheels wrapped in sticky Nitto Invo tires sized 265/35/18 in the front and 305/30/19 in the rear.

The interior of SPLITR feels as racecar-inspired as the exterior with comfortable and supportive Recaro seats, Ringbrothers billet components, an IDIDIT steering column, gauges by Classic Instruments, and a cabin kept at a comfortable temperature thanks to a Vintage Air SureFit system.

Ringbrothers Parts Used:

Universal Billet Shift Bezel with Leather Boot

Stainless Steel Bolt and Washer Kits

Universal Round Billet Hood Pin Kit

Billet Clutch Reservoirs

Billet Hood Adjusters

Terminator Touch Start System

Universal Micro Hinge

Universal Billet Gas Cap

Clutch and Brake Pedal Kit

Gas Pedal Kit

Universal Turn Indicator

Universal Battery Disconnect Switch

Body Mount Battery Charging Port

Brake Handle Cover-Lokar Assembly

Mustang Parts

Mustang Billet Door Handles

1965-1966 Mustang Billet Hood Hinge-Air Frame

1965-1966 Mustang Billet and Carbon Fiber Taillight Bezels

1965-1966 Mustang Fastback Billet Trunk Hinge-Air Frame

SPLITR Mustang Rear Spoiler

1965-1966 Mustang Export Brace

Third Brake Light Bezel

1965-1966 Mustang Billet Trunk Latch Striker


Vehicle Specs:


Engine:  Wegner Motorsports 427 C.I. Ford Racing

Engine Oil:  Royal Purple

Engine Oil Weight:  10-40W

Engine Extras:  Atomic Carburetor

Transmission:  T56 Tremec 6 speed

Transmission Oil:  Royal Purple Manual Transmission Fluid

Rear End Manufacturer:  Detroit Speed

Rear End Type:  Ford 9”

Drive Shaft:  Dynotech

Differential Oil: Royal Purple 

Differential Oil Weight:  75-90 W



Type:  Rack and Pinion

Manufacturer:  Detroit Speed

Steering Column:  IDIDIT

Power Steering Fluid:  Royal Purple Power Steering Fluid



Seats:  Recaro

Gauges:  Classic Instruments

A/C System:  Vintage Air, SureFit System


Stereo System

Head Unit:  Kenwood

Speakers:  JL - Audio

Amplifier:  JL - Audio


Wheels and Tires

Wheel Manufacturer/Model:  HRE Wheels

Front Wheel Size:  18” X 9”

Rear Wheel Size:  19” X 11”

Tire Manufacturer/Model:  Nitto Tires - Invo

Front Tire Size:  265/35/18 ZR

Rear Tire Size:  325/30/19 ZR



Paint:  Glasurit – 90 Line, a brand of BASF

Paint Color:  Ford Race Red

Paint Booth:  Global Finishing Solutions - Ringbrothers Performer Booth

Tail light lens:  Ringbrothers Machined



Fuel Type:  93 Octane Gas

Fuel Pump:  Aeromotive

Fuel Tank/Cell:  Aeromotive

Fuel Management:  Aeromotive 

Fluids:  Royal Purple 



Front Manufacturer:  BAER Brakes

Front Caliper Specs:  6S 14” Extreme

Rear Manufacturer:  BAER Brakes

Rear Caliper Specs:  6S 14” Extreme



Battery Location:  Trunk Mounted

Battery Manufacturer:  OPTIMA



Header Manufacturer:  Ringbrothers Built

Header Details:  1 ½” primary tubes

Exhaust Manufacturer:  Flowmaster/Hurst/B&M



Radiator: AFCO Custom Built

Fans:  SPAL

Fluids:  Royal Purple



Chassis:  Detroit Speed



Front Suspension Manufacturer:  Detroit Speed Engineering

Front Suspension Type:  Mustang Aluma-Frame

Rear Suspension Manufacturer:  Detroit Speed Engineering

Rear Suspension Type:  Mustang QUADRALink

Shock Manufacturer:  JRI

Sway Bars:  Detroit Speed Engineering



Corporate Sponsors

Royal Purple

Glasurit – 90 Line, a brand of BASF



Product Sponsors



AFCO Racing Products

ARP Bolts

Baer Brakes

Bowler Performance Transmission

California Car Cover

Centerforce Clutches

Classic Instruments

Detroit Speed Engineering


Dynotech Engineering Services



GFS – Global Finishing Solutions

Heatshield Products


HRE Wheels

John’s Industries


MSD Performance

Nitto Tires


Painless Wiring


Upholstery Unlimited

Vintage Air/Front Runner

Wegner Motorsports

Ringbrothers Proud Sponsors:

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  •  Hurst
  • Flowmaster
  • B&M
  • BASF
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