The engine used in the Scorpion is based on the unit used by Acura in its 2008 Acura TL-S sedan, rated at 289 hp in the Scorpion. Ronn Motors will offer a twin-turbo option of the powerplant offering about 450 hp. The 2100-pound car is expected toa ccelerate from 0-60 mph in 3.2 - 3.5 seconds while the quarter mile test is promised to come in in the mid 10s at 130 mph. The car will be initially available with a 6-speed manual, with a 6-speed automatic following in 2009, the company said.