your 320 was an e30?? what did you find out about the head and the high compression? this guy suggested that because the pistons had alot of meat on top - to have it shaved to reduce comp slightly and apply moderate boost ....
btw my overall goal is to retain this car with maximum weight reduction (and about 220-250hp via boost) as the most hardcore thing it will experience - DD longevity will be my top priority without losing out on speed too much.
Steer with your QUAIFE