Quick ? regarding 670 heads on 389
I have run across a 66 389 (YS) block that has been bored .40 over for a decent price and from a guy I trust. However, the heads are not coming with it. There is a set of 670 heads for sale that I have thought about picking up until I can save up some $$$ for a set of heads. I do have a set of bare 093 heads that I'm thinking I might have rebuilt in the future.
I have read many, many, threads regarding compatible heads for a 389 and I still don't have a definitive answer. The engine I'm looking at has a stock cam (according to the owner). Would the 670 heads fit?
Thanks for any feedback.