I have read it must be hundreds of threads and cant find the answer to what pulley would fit on my gm power steering pump. It is a JTO conversion, it has the press fit pulley that is NOT keyed, and the shaft is 5/8 inch. I have seen Volvo pulley from 1980 240dl. Ordered new one does not fit. Ordered another number that was on a thread does not fit. Looked at a website for Martin Sprocket and Gear and the pulley looked correct but the insert that was recommended was keyed. I have searched and searched even went to the local parts store even junkyards but they are so computerized they cant or wont just go in the back and see if they have a pulley that would work. I just saw another thread to call Classic Cruisers because they have a pulley but they are not open today so I sent an email probably wont hear back until Monday so I dont know if this is the answer or not. HELP