I sent a couple of MacKay water pumps into Howard Stewart for rebuilding back when HS owned the company....at the time I thought it was reasonable...years ago you could buy a wp rebuild kit from GM...I probably still have one around here somewhere...........
Thanks for the advice. I'm really looking to rebuild alot of the components for the experience. The car never had overheating problems when we drove it years ago. I'm sure rebuilding the pump would be suitable for a stock car.
Cast impeller...the good stuff, all of the junk you buy nowadays has shitty stamped impellers. Hence my advise, buy a new pump w/ billet or cast impeller.