I added an E-Force and a LS9 (ZR1) Cam and JRE tune with no other mods. Puts out over 400 ft-lbs at 2000 RPM
About 450 HP but we suspect the dyno was reading low and it was over 100°F and humid that day. Sounds completely stock at 550 RPM idle. 2nd gear can be used if you roll it out carefully. LOTS of torque.
-Mark.