[vpoppv]

This dude always has forklift motors:

DC Motor # 307613 36/48v Forklift & Electric cars - eBay (item 180568778270 end time Oct-07-10 12:23:27 PDT)

And this one looks like a real winner, but WAY out of my price range. Also, coupler might be tricky:

36 / 48 Volt DC Forklift motor GE # 97F20 ? 30040 New! - eBay (item 200524600284 end time Oct-27-10 13:36:31 PDT)

And then there's this beauty, but you'd have to convince him to ship it. And he's wrong about the amps, it's 355 amps!!

Forklift 48 Volt DC Electric GE Nissan Motor w/Pump Car - eBay (item 170546553681 end time Oct-28-10 17:11:44 PDT)