Keeping things irrelevant and off topic…. In my summertime boredom I’ve come to the conclusion that if the op wants a “simple” aluminum head upgrade it’s going to involve a new set of aluminum roller rocker arms. I know that he mentioned using the “stock” rockers but I can’t see anyone going to an aluminum head and use stamped steel rockers (am I wrong?). I’ll be honest… it’s been years since I’ve “shopped” for a “warm” combo, but it sure seems the days of ductile adjustable rockers is dead.