any benefit to swapping heads?

Just to be clear my AAR had a 69 motor with X heads pocket ported and just touched up every where else and a set of mechanical carbs 4782, 4783's so when I hammered down I opened all 3 carbs with no bog what so ever and it was a 4 speed car so no convertor to help it rev.

The AAR engine was on a stand for years nice and safe in the heated air conditioned garage.