You use a 7 rib 65.3 inch long belt, goodyear p/n 4070653 as original length with a/c. Unfortunately, there are very few 7 rib belts available, the old fashion belts were made in half and full inch increments. Most manufacturers use the part number to indicate the length of the belt (as I mention above), so if you can determine how much shorter belt you need, the p/n is easy to determine..example; 5 inches shorter will be a 4070600 or 4070603 (if you want to be exact). That size may not be available since the serpentine belt sizes are very limited. Go to an independent parts store and they can help you..The pimple faced kids at autozone haven't figured out how the belt numbering system works..(sorry, but true). Upon removing the a/c, I think you still need to wrap the belt around something, as most components in the drive system will turn the belt in one direction or the other (drives from the rib side or the flat side). My parts book did not ask for the option of "no a/c", so I think that car wasn't ever built that way. Check with the dealer anyway. Another option is to get a 7 rib pulley and build a bracket that would take the place of the a/c. Goodyear makes a 7 rib pulley, p/n 49004, of which the center hole is a common metric size that is used on just about every car that uses serpentine belts.. the bearing's inside hole can be determined at any bearing store, I don't have the info handy, but the bearing p/n is 203 (an industry standard..it is also a common bearing used on early GM alternators). You can find a metric bolt (with a shoulder) that would fit the center at any junkyard. Your other option, if the compressor bearings are ok and it isn't locked up..is to leave the compressor on and disconnect the wiring so it never kicks in..it will serve as the correct "idler pulley", already properly mounted.