[Conway Witten]

Alan,
I agree, as long as the replacement heads use the same factory length head bolts (which means that the head isn't thicker, thus the ports are at stock heights) this also means that the original push rods and rockers will work. If the stock intake will bolt up, they should be considered as a replacement head. Think about it, how cool would Yenko and Baldwin Motion cars be in Stock and Super Stock, the Shelbys added flavor and these could too. Think of it, somebody somewhere will try to run a turbo charged Covair? Kinky!