TUNNING

The Repco Porsche 911 is powered by a GM V8 engine producing over 1,200 hp.
The Porsche 911 is a sports car icon, prized for its driving dynamics, performance, and superb craftsmanship. It stands out from its rivals thanks to its unique rear-mounted flat-six engine. However, an Australian builder swapped that engine for a twin-turbocharged V8.
This extreme creation, dubbed the "ShowTime Repco 933," is based on the 996-generation Porsche 911 and was built in Gary Reid's workshop; he is an expert in constructing cars for shows and drifting.
The original flat-six engine from the 996 model was removed and replaced with a GM 7.0-liter LSX V8—an engine with more than double the displacement of the original. Reid and his team could have settled for a standard LS engine from GM's lineup, but they chose not to.
Two massive Turbosmart turbochargers are mounted at the front of the engine, while the exhaust system spits flames directly through the engine cover. Fitting this massive engine into the 911 required the team to fabricate a new firewall, a new floor, and a new transmission tunnel. Despite these modifications, the engine still protrudes by several centimeters, necessitating a huge cutout in the engine cover. No standard Porsche 911 transmission can handle the power generated by the twin-turbo V8 engine, so Reid installed an eight-speed transmission from a Bentley and added a sequential shifting mode. All told, this wild Porsche 996 develops over 1,200 hp.

That is not only far more power than any standard 911 model but also exceeds the Porsche 918 Spyder—even with its advanced 4.6-liter plug-in hybrid powertrain—by more than 200 hp. Unlike that hybrid hypercar, however, this 996 sends all its power exclusively to the rear wheels.
The heart of the 933 is a 7.0-liter LSX V8, built by Hi-Torque Performance and fitted with twin Turbosmart turbochargers, running E85 and managed through Haltech electronics. Output lands north of 1,200 horsepower, a figure that makes even the hottest factory 996 look sleepy by comparison. The 996-generation GT2, the most powerful 911 of that era, made 456 horsepower from its twin-turbo flat-six. This build nearly triples that number from an engine configuration and location Porsche never sanctioned.
Inside, the cabin keeps just enough 911 DNA to feel honest about its roots. Recaro racing seats wear Porsche's Pepita checkered fabric, and the dash carries a motorsport-spec steering wheel ahead of a digital cluster. The paint is Sandy Taupe, borrowed from the Toyota Land Cruiser parts bin rather than any Porsche palette, finished with red, black, and blue accents on the turbo intakes, brakes, wheels, and roll cage.
ShowTime brand ambassador Gary Reid laid out the thinking behind the build plainly: "I've always been a Porsche fan, and I love big-horsepower V8s, so the plan was simple: put a twin-turbo LS 427 in the front of a 911 Porsche, build a one-off wide-body kit, take inspiration from builds all over the world, and the result is this: the 933 Twin Turbo."
Repco isn't just a parts-bin sponsor here. The company has real history in motorsport's record books. In 1966, Jack Brabham won the Formula One Drivers' World Championship driving the Repco-Brabham BT19, with Brabham's own team taking the Constructors' title in the same season, the only time a driver has won an F1 championship in a car of his own make, run by his own team. That pedigree gives the 933's badge more weight than a typical tuner crossover.

The modifications go far beyond the powertrain. For instance, an exceptionally powerful cooling system has been installed in the cabin. The interior has also been thoroughly reworked, featuring a custom dashboard that houses a new infotainment screen, an aftermarket digital instrument cluster, and a multifunction Haltech steering wheel with buttons and switches for adjusting various functions and driving modes on the fly.
Additionally, carbon-fiber Recaro seats and a custom transmission tunnel have been installed. The tunnel houses a carbon-fiber sequential gear shifter and a hydraulic handbrake for the rear wheels. This demonstrates that the car was built not just for straight-line speed, but also for drifting.
A custom body kit was also handcrafted for the car. It features widened fenders, a carbon-fiber hood, and a massive rear wing, along with a shark-fin aerodynamic element above the engine cover—inspired by prototypes competing in the 24 Hours of Le Mans. Rounding out the modifications is a set of custom Rotiform wheels, measuring 18 × 9.5 inches at the front and 18 × 10 inches at the rear.
If you strip the Porsche 911 of its most defining characteristic—the rear-mounted boxer engine—what’s left? If Australian customizer Gary Reid has his way, what remains is a monster with a 1,200-hp V8 engine up front. Oh, the heresy!
Dubbed the “ShowTime Repco 933,” this insane creation started life as a standard 996-generation 911—just like any other—before falling into Reid’s hands. The original boxer engine was unceremoniously tossed out to make room for a Chevrolet 7.0-liter LSX V8—more than double the factory displacement. Not content with just the engine size, Gary mounted two massive Turbosmart turbochargers at the front, featuring exhaust outlets that spit fire straight upward. To accommodate the beast, the team had to rebuild the firewall, floor, and transmission tunnel, as well as cut a generous hole in the hood to let the engine breathe.

Keeping the original interior would have made no sense—and wouldn't have been possible anyway—since part of the cooling system had to be installed where the rear seats used to be. While he was at it, Reid built a new dashboard featuring digital gauges, a multimedia system, and a Haltech steering wheel packed with controls to adjust the car's mapping on the fly. Carbon-fiber Recaro seats share the spotlight with a hydraulic handbrake and a sequential shifter, revealing the monster's true calling: going sideways at drift exhibitions.
The look is rounded out by a custom body kit featuring significantly wider fenders, a carbon-fiber hood, and a massive rear wing inspired by Le Mans prototypes. All of this sits on 18-inch Rotiform wheels. Nothing is sacred, really. And that’s just fine!
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