Milling heads...how much?
I'm looking at ~.061" equivelant if I try .040" gaskets with 5.3 heads milled .007" (.030"+.007"+.024")
Also, what is the factory P to V clearance?
I know it's the same question another way, but right now I've got time to answer questions prior to commiting to tons of labor.
IIRC, stock p to v is somewhere around .160 / .180. Idealy, you want to keep it above .100. The only real way to be certain is to measure. Calculations simply arent acurate.

