I just got my rear calipers from rockauto.com and they don't fit!!??? How does that work? They got the model and year right (95GS) The distance between the bolts is about 1-1/1/2 inches too short

 

Why didn't you just go to a local autozone and get them for $80?

 

they were on back order.

Are rear caliper sizes different varying year to year??

 

I don't think so, I believe all GS's had the same rear end. They probably just sent you the wrong thing. See if you can punch the part # on the calipers into google and see what it comes up with. Or call a few auto parts stores and see if they can cross reference the part #. Or post it on here.