I just installed my new alternator from Mike Singer which has a smaller pulley then my Jeeps stock alternators pulley He recommended shortening my serpentine belt by 1" my Jeeps stock length is 88.8", and the closest to this I could find was 87". I've installed the 87" one and it fits, and no problems are apparent but I'm wondering if anyone knows if this can cause problems later on down the road? with my water pump? ac condenser? I just emailed Mike asking if this was alright but I figured I'd throw a post up here as well.