I'm trying to build a mental picture of what I'm going to need for this L67 I acquired. I figured I only need 350ish RWHP out of it to be plenty quick. Not building a wheelstanding 1/4 mile burner just a fun quick car that I can do a little autoX fun in (87 Fiero GT). I prefer the blower whine to a turbo so I'm keeping the M90. I know there's alot of 3800 sites but some are blocked from work so I'll ask here first. Will a stock rebuild kit with new (stock type) pistons be fine at this level for my intent? I really do not want to sink 600$ on forged pistons, unless it is a must. I already guessed ported blower and heads, exhaust, tune, valve springs, and probably going with the short stack intercooler. Which cam/pulley size is needed for this hp level?