Plug wires go around front. So big block. Definitely not W5.
Good question....id bet lots, if not most would be 20 to 30 years.....meaning Mopar Perf aluminum.Yes car is big block. These have to be really old?
Could be a Chapman stage 6Any stage 6 head that I’ve see have the casting number on the one end. Do u have a pic of the other passenger side head? Kim
Ya, they actually had 2 versions of them. And a 452 aluminum version kimCould be a Chapman stage 6