I have six Powerex CM400DY-12H 600V, 400A IGBT half-bridges for sale. These are unused. I checked basic functionality at low voltage and current. Datasheet:
http://www.datasheetcatalog.com/datasheets_pdf/C/M/4/0/CM400DY-12H.shtmlJust what you need for your DIY electric vehicle
$20 each or the whole shebang for $80 plus shipping (figure about 8 lbs or 4 kg from upstate NY).
PM me if interested.
Thanks,
John