[QUOTE=StreetKruzer] I noticed the AC compressor has two belt grooves. I don't have to use both of them do I? It looks like the belt will have contact with at least 2/3 of the pulley, and it will be the only thing on it other than wp & crank. QUOTE]
With the belt having 2/3 pulley contact, you should be good to go, assuming that you have 1/4 or more contact on the crank pulley. And one belt is all that is needed. It is nice that they provide two pulley grooves so that you can just about always count on one of the grooves lining up, no matter what the application.