Do you think it will be well worth the investment to put new heads on a turbo stang? I am getting a 60-1 which should be enough to split the block(properly tuned) and i'll be building a custom upper intake, exhaust, etc. but i don't think it should be necessary to replace the heads that i previously ported and polished (never got to run with them). Do you think i should just up the boost, or try to get some better heads to make better use of the same boost?