So After my ac compressor decided to lock up this week I found myself scrambling to find some reliable info on a shorter belt to bypass the AC. Looks like it's a 7 rib belt, (I used a 6 rib, oh well) and 54.8". The tensioner is right in the middle of its marks. I guess a 55" would work also. Hope this info helps someone.

 

I think a belt from like a 1990 Nissan Stanza should work for AC bypass. Its 6 rib...so you do have to make sure the ribs on all the pulleys are aligned.