Cars & Bids Lists 1988 Porsche 911 Turbo 930 With G50 5-Speed

Cars & Bids has listed a modified 1988 Porsche 911 Turbo 930 featuring a G50 5-speed swap and reported 476 hp, with 46,400 miles shown.

A highly modified 1988 Porsche 911 Turbo (930) has appeared on Cars & Bids, offering a mix of classic air-cooled character and extensive performance upgrades that push it far beyond factory specification.

Finished in Guards Red over a black and red interior, the coupe shows approximately 46,400 miles on the odometer and carries a clean Washington title. The included Carfax report begins in 1990 and lists no accidents during the recorded period, though several gaps remain. The seller also addresses a mileage discrepancy, noting that a Carfax entry showing 48,308 miles in October 2022 is believed to be a typo, and that the correct figure should read 46,308 miles.

What truly sets this 930 apart is the drivetrain transformation. According to the listing, the factory 4-speed manual transmission has been replaced with a G50 5-speed manual gearbox, a swap that immediately places this car in a different category for enthusiasts looking for a more flexible and modern driving experience in a classic Turbo.

The modifications go well beyond the transmission. Under the rear decklid sits a heavily upgraded 3.3-liter turbocharged flat-six fitted with a Precision Turbo & Engine PT6262 turbocharger kit and an Electromotive TECgt engine management system. The setup also includes electronic fuel injection, a custom intercooler, crank-fire ignition, Siemens fuel injectors, and Billy Boat exhaust headers, along with rear coilovers and upgraded braking components.

The listing states that the 930 originally produced roughly 282 horsepower and 278 lb-ft of torque in stock form. However, dyno figures shown on a June 2015 invoice included in the photo gallery reportedly indicate output of 476 horsepower and 460 lb-ft, turning this classic Turbo into a dramatically more potent machine.

Visually, the car has also been reworked with 18-inch Fikse wheels, a 964 Turbo-style front bumper and rear bumper, 993-style mirrors, a front splitter, tow hook, and an aftermarket decklid and wing. Inside, the cabin features MOMO hardware, AEM air-fuel and boost gauges, RS-style door panels, and updated audio equipment.

As with many extensively modified builds, there are practical considerations. The seller notes that the car may not pass emissions testing in some states due to its modifications, placing additional responsibility on potential buyers to verify registration requirements before bidding.

The auction description also lists minor flaws such as exterior chips, scratches on the splitter, a chip on the passenger-side headlight, wear on the shift knob, and tires showing a 2011 date code. Service records mention electrical work and fuel system repairs in 2022, while Carfax shows an oil and filter change in October 2022.

With bidding reaching $80,000 at the time of the listing, this 930 appears poised to attract serious attention. Between its iconic reputation and the rare appeal of a G50 swap paired with major power upgrades, it may ultimately serve as a telling indicator of how strongly the market continues to value the Porsche 930 legend—especially when it comes with no shortage of extra horsepower.