Firehawks start out as a trans am or formula from the factory, then shipped to slp were they receive an appearence package(diffrent hood, spoiler,17 in wheels)and depending on what you ordered an slp exhaust, bilstein suspension, auburn rear. Racinbird has the diffrences right. Except mine(01) was rated at 335hp and the 02 camaro ss' and firehawk were rated at 345 stock! Basicaly all ls1's are the same though once you start doing mods.