will an 01 660 rear shock fit 02s and older?

 

yes, other than the cdi boxes, everything is interchangeable from 01-05

 

If I remember correctly, 02 went from the remote piggyback to the on back of shock location. Supposedly was an improved set-up as well. It would have to be cheap and myself in a bind to put an 01 shock on a newer version Raptor.