Well, I got out and looked at the pump label. It is a Baldor Industrial Motor, from Baldor Electric Co., Ft. Smith, AR.
I got the specs off the label and have sent them in to the company to see if they have an answer. I browsed their site and can't find my EXACT specs (and the label has a place for CATALOG NO. but of course, it is blank). Since mine is a 2002 model, they may not have it on their website anymore, but they should have info if they sold this unit in the past.