Gregg Hamilton loves being Ken Block’s lead mechanic and Pontiac Firebirds. You might remember his previous project, a Trans-Am with a twin-turbo LSx V8. Three years ago Gregg started building a second Firebird he could drive without fear of damaging the finish. He started with a 1971 Firebird Formula that previously sat for a decade in Las Vegas. Under the body he installed modified Corvette C6 subframes, custom pushrod suspension with QA1 coilovers, and C6 Z06 Corvette calipers with Wilwood rotors (6-piston front, 4-piston back). Next came a supercharged LSx V8 estimated to make 600+ hp thanks to a 5.3 L block with aftermarket crank, rods, heads, and a Weiand blower. The engine is mated to a Nissan R32 five-speed manual transmission, R33 transfer case, Q45 diff in front, and 300ZX diff in back.