I use Klean-Strip KS-3 Premium Stripper. I get it at Home Depot. It works in 15 minutes. The paint blisters off the surface, and you can scrape it off with a plastic putty knife. If you have multiple layers of paint, put another coat of stripper on right after you scrape off the first coat. I've had excelent results with this stuff. Use gloves and a respirator, and duse it outside. If you use it in a shop or garage, No smoking, open flames or pilot lights. Just read the instructions and use common sense. Let us know, in the for sale or trade forum, if you will be parting the other pumps out. I dont need any parts, but some of the other guys do.
You might also want to try the electrolosys method....
[This message has been edited by Thunder II (edited 02-02-2006).]