Well, I may have just got lucky... a 9796351 short pump just popped up on ebay that says it's a nors and looks to have a good impeller so I snagged it for $39.99 + free shipping. I couldn't pass it up for the price especially since I've been hunting for one of these for a while.
http://www.ebay.com/itm/1969-Pontiac...26bbfc&vxp=mtr