hi guys you're right in just about eveything you're saying about the 2.02 heads, if memory serves me right mine are #462 castings
i've had mine rebuilt,stainless inserts to handle unleaded fuel,ported polished,etc etc...long story short 1000 bucks(can)
i was bolting them back on. for about the same price aftermarket is the way to go and lots lighter too!