i wouldnt go with any of the stock replacement types at all. i would go for a W-series head i sure wish today that i had done that instead of putting money into something that has lots of limitations, and yes this comes from the idiot who is sinking even more money into trying to make more power with those edelbrocks by trowing money at the problem by putting a screw ontop of them.

stock replacement heads are fine if you dont have any intentions making big power in the future.