As far as I know all full size Jeeps use V-belts. The different compressor numbers will either desgnate v-belt or serpantine. They may also designate dissplacement. Which one is best? I would ask. Larger is not always better with compressors for A/C. P/S Pump will match the old box, just change out the high pressure fitting and valve and spring from your old P/S pump. If you have all the 73 stuff get the adapter Frank mentioned and don't worry about changing it over. I posted the answers just in case someone else was interested and because you asked! Mark Price mpriceATwestco.net Morgantown, WV 69 AMC rambler, 4.0L, EFI, 5 speed 65 Ambassador Conv, 327 AUTO, Basketcase 01 S-10 CREWCRAP 4X4 ---------- Original Message ---------------------------------- From: Joe <jgray_55@xxxxxxxxx> Reply-To: mail-From-mprice-westco.net@xxxxxxxxxxxx Date: Wed, 27 Apr 2005 11:49:23 -0700 (PDT) >OK..The Sanden R12 type compressor sounds like a good >idea....less vibration...less HP loss also...more >compact. BUT where do you get the adaptor bracket to >fit it to the york style bracket?? Also...there are >THREE different part ### of these compressors listed >on the www.rparts.com/index.asp webcatalog?I "think" i >want to keep the 73 Jav brackets/pulleys to make the >swap easier. A late 80's-91 Grand Cherokee setup was >suggested...what type of belts/ps pump.....etc does >thst use? ANYONE done that swap onto a V8 car??Will it >hook up to my PS box on the 72? Does anybody have a >setup from one of those? Getting closer to V8 swap >time!!!!THANKS again,Joe > >__________________________________________________ >Do You Yahoo!? >Tired of spam? Yahoo! Mail has the best spam protection around > >http://mail.yahoo.com > > > >