An Indiana company named Revenge Designs Inc. unveiled at $145,000 supercar Monday that's fitted with a slew of General Motors parts, including the vaunted LS7 V8 rated at 505 hp and 470 lb-ft of torque.

Based on the Factory Five GTM body and chassis, Revenge Designs adds its own body styling to the Boston company's basic supercar formula to create the GTM-R.

The top speed is expected to reach 180 mph. The estimated weight is 2,550 pounds.

The wheels measure 20 by 9 inches front, and 22 by 11 rear. The suspension has three settings: a ground level that acts as an anti-theft device and makes the car non-driveable; a track setting and a transport mode.

The LS7 engine is paired with a five-speed manual transmission or an optional six-speed gearbox. The brakes and steering column are also sourced from GM.

One car has been built--the sleek white one displayed at the Detroit show. Two more are in the process of being built, says Peter Collorafi, Revenge CEO. He had planned to reveal the car in December in Indiana, but delayed when the opportunity in Detroit became available.