tks so much finally found a pic after looking for everHere you go.
In ‘72 the water pump pulley only had one belt on it. In later years they changed it to a dual groove and also ran the PS pump belt around it.
So, I have determined that as far as I can tell the PO of my car installed the AC brackets and belts and routed everything wrong, but I didn't realize it until mapping things out to prepare to pull the engine. I was looking at the 1972 Chevelle Assembly manual. It shows that for a 1972 AC...www.chevelles.com