Which fan

is that even available anymore? when i was looking no one had it. mancini has what they call a replacement for one.. Mancini Viscous Fan Package

Yeah, that ain't it. If it's not that whacky lookin five blade offset jobby, that's not the one. There is some good info about it in the Mopar engine book. how they found and proved it moved more air than any of the rest and drew less horse power, too. They are well worth the money. Jegs is showing them in stock......but you know how that goes. They actually came stock on lots of things in the late 70s through the 80s. Diplomats, Fifth Avenues, trucks and whatnot. Something about that staggered fan blade design that moves more air and varies the air flow as well as knocking off some of the noise. A lot of engineering went into that package and people just slap ignore it comin and goin. I tried to help @Mtrhead sell his in the for sale section. Posted a link to it more than once. Got ignored. So you know what? I bought that rascal myself. People always wanna cheap out or use a stupid BS electric fan that's mega cheap on sale and barely moves 1500 CFM, when it takes about 4000 CFM to cool the average hot rod motor. You just caint tell some people a deadgum thing. They flat out will not listen.