Performer RPM Air-Gap + Holley 750 + 4" air cleaner = Stock hood clearance?

Guys- Thanks for all the great info...it's all good to know. I think I'll give it the Pla-Doh test and see where my baseline is and go from there.

1 question I do have. I currently run Hooker Super Comp's and would like to switch to TTI headers. Will I have to raise my engine 1/2"? How come? Also, why run solid motor mounts?

Thanks!