I have a used stainless impeller that is stamped "AA" but if you measure the small diameter it measures 71/4" witch idecates "A" cut from the chart ive seen on Berkeleyjet.com. Im selling on this board until Wendsday the 9th. Then it will go on Ebay. So send me an e-mail with a price if you are intrested. Ant
ranz1@earthlink.net
I also can provide photos to you