Similar mods except I havent changed plenum, or installed a surge tank yet, as Worm touched on above the only hold back I have is a little lag from time to time usually in 2nd gear as I'm still on standard actuator/housing, pushing 311rwkw on 14psi only other diff the T56. For some reason I don't seem to get surge even under 1/4 tank, in which I probably just jinxed it.