Found my dads original 1971 duster!

CFD244 said
The whole hating clutch fan thing is just me. See if you can fit the thin Hayden clutch that was posted earlier on. Just make sure before you spend money that you don't have to.

Ya. I took mine in to moparts today and he said that mine is the “thinnest” clutch fan you can get (of any that he had in stock). But maybe the Hayden one is thinner. Mine is just under 2-1/4”, as seen in pic