915 J heads, need specific machining details to squeeze as much as possible out of them

Good 70* throat cut, 5 angle cutter over that, shorten guide tail an profile, grind out the roof kinks and if you go through a lil into the lower head bolt pad... just JB a hardened washer over it when you install the heads and bolt them on. I'm racing tomorrow in barona, but if I dont too pissed drunk afterward... I'll post some pics of what it should look like.