MKIII Custom

The Superformance MKIII-CS brings perfection to another level

Superformance has been building Shelby Licensed Cobra Replicas for over 25 years. We recently found a change in the market as more customers started requesting a modern twist on these classic roadsters. Superformance is pleased to announce our Custom Series (CS) allowing you to be the artist and use our MKIII as the perfect canvas.

Available in any custom paint finish you desire. You may wish to select the blackout package which replaces the chrome and stainless finishes on headlight surrounds, Windshield surround, quick lifts, roll bar and fuel filler.

The interior gets a modern twist with Custom Series seats and door map pockets expertly covered with european leather in a diamond stitched pattern. The Center Console, Transmission Cover, and available trunk mat can be added in the same diamond stitched pattern with or without contrasting stitching. The traditional mechanical gauges have been changed to electronic gauges.

Other modern touches include available electric power steering, LED headlamps, push button start and 18″ two piece aluminum pin drive wheels available in a number of custom finishes.

Dimensions & Capacities


Hand laid fiberglass panels with steel tube reinforcements in all openings. Where the body points carry loads thay are reinforce with steel bars or panels. Body bonded to chassis and is completely non-stressed. Supplied painted in base coat and clear coat urethane finish. Body in aluminum optionally available.

Front & Rear Suspension

The front sports a fully independent unequal length A-arms with adjustable coils over telescopic shock absorbers, while the rear is also independent unequal length A-arms, with fabricated hub carriers and coil over shock absorbers.

Engine & Transmission

Installation kits are available for Ford 302, 351, 460 and 427/428 cubic inch engines with Tremec 5-speed or Ford top loader 4-speed transmissions. ZF Limited slip differential. Ratio 3:45:1 as standard equipment.


Latest technology single row high performance aluminum core radiator with 2 thermostatically-controlled electric fans; original specification oil cooler; hand fabricated stainless steel engine louvers; heater unit with 2 speed fan; original style wiper assembly with 2 speeds and 140 degree wiper arc; hand fabricated windshield assembly to original specification, chrome plated. This package comes standard with Roush racing parts including a nine-inch racing clutch to a Dana Hydra-Lok limited-slip differential fitted with 3.46:1 gears.


Hand made seats upholstered in German specification automotive leather. Fully carpeted floor, center console, sides and rear firewall. Slide adjusters for driver’s seat. Tonneau cover and soft top supplied as optional equipment. Hard top optionally available.


Jig-Welded parallel ladder frame of heavy wall 2″ x 4″ rectangular steel tubing with large diameter outriggers. Frame incorporates front and rear crumple zones. Door hinge, steering column and windshield pickup-points incorporated onto main chassis.

Pedal Box

Fabricated steel plate pedal box assembly with adjustable pedal pads. Incorporates brake booster and master cylinder assembly with hydraulic clutch actuation.

Front Brakes

Wilwood big-brakes. Ventilated disc with 4-pot calipers.

Rear Brakes

Ventilated disc. Cable-operated hand brake actuates rear brakes.


Rack and pinion. Original style steering wheel.

Exhaust System

Superformance MK III: Side-mounted exhausts to original specifications. Superformance Roadster: Custom made muffler and tailpipes with stainless extensions.

Instrumentation & Controls

Original style instruments specially manufactured by Smiths of England, fitted to original S/C and Roadster lay-outs. Hand crafted shifter and handbrake.


Aluminum, pin drive “Halibrand” style wheels.

All Superformance products are supllied complete, but without engines and transmissions. The selection, purchase and installation of the drive train are the responsibility of the purchaser.

Available Paint Colors

Superformance Corvette Grand Sport bodies are available in three standard colors with or without striping. Striping can be any of the standard MKIII colors and is painted as the first coat color on the body creating a smooth finish. Stripes are an added option. Custom paint is also available, please contact your dealer for more information.

Monza Red

Sunset Red


Dark Silver

Light Silver

Titanium Silver

Portofino Blue

Galaxy Blue

Royal Blue

Indigo Blue

Malachite Green

British Racing Green


Wimbledon White