What are the rest of the late model (73 & Up) folks doing for radiators?

I've got a 75 Duster 360 that the OE radiator is looking like it's about ready to give up the ghost. I'd live to put a radiator such as this one sold by autocity1958 on ebay ( 1966-1972 Mopar B & E Body Aluminum 26" Radiator Road Runner Challenger Cuda | eBay ) But these cars came with these thin radiators.

I purchased a Cold Case radiator for my 70 R/T last year and that experience has left me not exactly thrilled about going that route.

I'm not willing to give up my fan shroud or go to electric fans, I just want a radiator that fits, and will give me a bit more cooling efficiency if possible. Even with this thin OE radiator, my fan clutch is less than a fingers width from the radiator. The current one on hot/humid Texas days, gives me a 30-35* drop across it at most and struggles to do it.

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