Cam Choice

The XE268 cam will be a bit big with the factory stuff,(converter and gear) but will work fine with the changes that you have planned.

Yeah, thats why I was leaning towards the XE256, since it will still be stouter than the .440 lift 260H cam I have now. Should I install it straight up or advance it 2 degrees?

Also, I think the 256 will work better with manifolds, but im thinking about headers. Besides TTI, what other cheaper header will work well? Wtihout the motor in the car, will the headers slide in with the whole engine assembly, or am I better off using the manifolds?