383 Duster Radiator/Mechanical Fan Combos

I'm about ready to start up my Duster for the first time but am having trouble finding a radiator that fits with a mechanical fan w/fan clutch. I've tried the jaguar setup with a mechanical fan w/ a 3 core brass radiator (2.5inches wide) and it does not clear. An aluminum Griffin #800038 is too wide as well. I can run a flex fan but really don't want to. What radiator are ppl running in their big block a bodies with a mechanical fan w/ fan clutch?