Jamie:
I got the cams and header boxed up and will drop off in the am. I was talking with Charles this afternoon. With the budget header, he suggests first trying the 20v cams as a set with intake at +4 and exhaust at 0. Intake could go as much as +8 with the N1 pistons, but he doesn't suspect it will be necessary. You'd have to see what makes the fattest curve. He doesn't think there would be much gain on the exhaust side, but if you want to, you could try -2 after maximizing the intake side. I'll be looking forward to your results.