I have already posted on this, but I'll do it again
185 Hp and 270 lb/ft of torque at the rear wheels, (remember this is going through a C6, NP205 and 9")
which equates in a round about way to about 255 hp and 365 lb/ft of torque
I'm also running with the air silencers cut off of my intake, and dual 2 1/4" exhaust (a little restrictive)