[DD (CA)]

With massaged porting and screw in studs. So, the aftermarket Al head idea doesn't fly...

FWIW, Comp and Crower both pretty firm on "break in procedure" after new lifters / old cam, but I've also been reading some pretty astute counter arguments from HAMB, Z28 and hotrods sites.

Also informed me it was worthless to undergo break in now that I've driven it for a bit....

I'm torn a bit. Babied the thing so far, but if the rocker arms get loose again...