I have a couple of questions about fan clutches. First, are fan clutches interchangeable between engine sizes or are they designed for a specific application? I have a clutch from a 400 that I would like to use on a 360 if it is O.K. to do so. My second question is, what is the best way to clean up a fan clutch? The clutch from the 400 is fully functional but looks bad. It was real greasy which I have taken care of and now I would like to get the discoloration and some scaling off of it and then hopefully paint it. I would like to media blast it but I'm afraid the grit might get in where the shaft goes into the seal. I tried wire brushing it but that isn't working out too well when trying to get in between the fins. Any suggestions (other than sending it out to be restored or buying a new one)?