As far as I know, all the '65-6 V8 shrouds are the same. '64 and earlier A-bodies didn't have a 22" radiator, so, no application there except maybe they fit the B-bodies?. The 19" ones for the 63-4 slant 6 should all be the same too. In '65-6 a slant 6 with A/C would have gotten the 22" radiator and a shroud made for just the 6cyl. They're metal 2 piece shrouds. Are you going to make them as exact reproductions?
