22 or 26 inch radiator

The 22 inch shroud has 4 small corners, less than the size of your hand, beyond the size of the core and opening. Very little additional core coverage. There just isn't much gained with that. The 26-inch radiator with basically same diameter fan gains much more from additional core size and even more with a shroud. If I could get my hands on an OEM 26-inch radiator, clutch fan and the shroud, I would happily sawzall/widen the opening of my 67 fish to utilize it.