what are people using for spark plugs with different combo's???? i'm trying to get some ideas on where to start with this thing, between 20-30psi with 8.5:1 compression.

Yea, I’d love some thoughts of where to start with a similar combo running a set of canfield aluminum heads… _I think_ that they recommend autolite 3924's with a stockish, NA setup.

FWIW, I ran some autolite AR12’s (about the coldest of autolite’s normal line of race plugs) with the stock L98 heads and even without boost but with a hot ignition it was fine, even in every day driver.