I'm collecting parts for my 88 c1500 5.7 rebuild. I'm replacing pretty much everything which means I need a pulley for the new power steering pump. The truck has no a/c which means it uses a 4 rib serpentine belt. I have looked everywhere for a new 4 groove power steering pump pulley and apparently they haven't been made for about 15 years. Does anyone have a line on a used one? If I can't find one will the 6 groove pulley work or will it just shred the belt? Anyone have any experience with this?