Question

do not use chris winter

I'd clean up the short side radius in the bowls and unshroud the intake valve somewhat in the combustion chamber. I'd also give the heads good three-angle seats and lap every valve in... If the intended use is a street motor, I'd be reluctant to hog the ports out where you favor volume over velocity.

Of course, if you're going with a twinscrew, you have more latitude. Keep in mind that even with stock cams and heads, a TS can easily overpower the factory bottom end so if you're planning on more than 450wHP and want to combine high flowing heads and cams with a TS, you're going to need a forged bottom end.

For a blower motor, you want either stock or stage 1 cams or "blower cams." For springs I'd consider Comp's high pressure beehive parts.

what campus you at?