So ya take about six GMC hoods...........

The engines in both pics are V12s. 702 cube GMC V12. I assume they use the GMC V6 heads, but I am not sure if they are the same.

Ya. I was referring to I misread his post. He was talking about 4 heads and I thought he meant "4 cylinder" heads instead of (quantity) "4 cylinder heads"

These are most certainly V6 heads though, and they even use V6 intake and exhaust manifolds.

"Who's on second?" LOL

[ame="http://www.youtube.com/watch?v=kTcRRaXV-fg"]Abbott & Costello Who's On First - YouTube[/ame]