A 2001 Z06 is 385 hp at flywheel, in 02' they changed the intake (if i remember correctly) to gain 20 more hp. That pissed off my neighbor who bought an 01'.

Check out www.z06vette.com, go to media links, and look for St. Louis dyno day. Its all corvettes and if i remember correctly most of them are stock, so you will be able to gauge the increase of power from a super charger.