Mopar rads have always been referred to as 26" units but are not really 26". The CC radiator mimics the OEM radiator very closely. There should be no reason to make a custom unit. However, if you can give us the dimensions, we can confirm just how close our dimensions are.
It's only a few isolated situations that our larger core prohibits the use of a clutch fan. I don't believe the 73 Duster is one of them. Again, we can confirm if we got a good look and/or dimensions of your unit.
thanks for offering to help!
Chris
