i have a 305 block, i think its ok, ill look into it more, but i have a good set of 305 heads fully dressed, all valvetrain, roller lifters with the retainers and locks, roller cam, centerbolt valve covers, and other random 305 stuff, the engine had 38000 miles on it, let me know what you need, i need interior parts for my iroc-z (the door panels, panel tops, and t-tops) so maybe we can make a deal, make an offer if you need something!