I had a 73 Challenger with a similar setup that was originally an AC car so it had a 26” yoke. There weren’t a lot of repop radiators at the time so I wound up using one from a 70s truck or van that I found a NOS shroud for. It fit without drilling anything but I had to use the later water pump housing with the pass side discharge. I believe they sell those in aluminum now, too. Never had an issue with it overheating, even with 3.91s.