Hey im 16 n ma name is Brett, ummmm i was woundering if n e one could give me some advise on wat tehy would do in this situation. i own a 1980 camaro z-28 n i am currently building 400ci small block chev for it n i have had the block honed duncked n i preped it for assembly i have the bottom end toghether with new bearing scat crankshaft, trw coneecting rods an speed pro forged pistons in it. no the main problem im having is that the heads that came off of it are 64cc 1968 327 heads now the ? is should i work with wat i got an get a multi-angle valve job with 2.02 1.60 valves put it or buy a set or dart sportman head help!!!! n e thing is great  

Get a set of the Dart Platinum 200cc heads (215cc if the car is drag only and not for street use).  You will kill those double humps!