Mopar Viscous fan??

mopardude318 said

Very cool! Guess I'll pick one up next week! I still need to convert my 68 cuda 318 over to the newer style 70 & up aluminum water pump...Do they take a different pulley set? Also will I need to change the outlet on my radiator to the passenger side?

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The pulleys and alternator brackets are different because the '70 and up aluminum water pump is longer and places the fan further from the engine and closer to the radiator. You need to watch out for radiator to fan clutch clearance with that set up. Pulleys for the '70 and up are reproduced; '69 and earlier pulleys are not:

http://www.bouchillonperformance.com/BPEpulleys.asp

Yes radiator must be changed or have a local radiator shop move the outlet to passengers side. You won't be able to see you timing marks unless you already have the later style timing cover and damper.