360 Ray Barton built Small block .

"The heads are cast iron from a Mopar built IROC series race engine-"

consider this a post "bump", or just general conversation:

curiousity is getting the best of me here..... Guess I "assumed" that they used W2 heads in IROC. I seem to remember them saying they were iron heads.....

Good luck with the sale, sounds like a good running mill.