For a street car the heads will be fine. My 4000lb wagon has been 11.0's with a small mech cam from Comp. The heads are untouched RPM's except for making sure the valves seat properly and the guides were not too tight. I shift at 5500 and cross the stripe at 6100(my convertor is a little looser than planned).
I would go w/a 2" header. I run TTI stepped 2-2 1/8". I will be adding a little more cam and head work later so I will grow into them. I will say if the Trick Flows had been available when I built this I would have gone that direction.

Ohio Crank, scat, Molnar are other sources. I do have a 440 source kit. It was spot on per my machinist.