I bought a parts lot that came with a 1984 svo a guy was parting out. After laying everything out I realized the previous owner had used turbo coupe parts from 87... I bought this set because he had an ac for sale. The ac has a ribbed pulley. I have many pulleys from ranger and turbo coupes that are all ribbed. Should they swap over? The one pulley I am missing is power steering. any idea on what pulley I can use on the stock power steering pump that I just bought?