This is for the GMC G-van.....
http://www.coopercontrols.co.uk/components/motors.htm
might work for you also.
I don't know if the Dodge TEVan has the same internals as the G-Van.
But it might be worth a try.....
I have been looking for one aswell......
I know Chennic has some 156V Sepex on their website, but I sent mail to ask for prices but got a really strange answer So i guess they aren't ready with the prototyps yet.
If you can find a controller from a PSA (Peugeot Partner or Citroen Berlingo) car from europe, they use 162 ish volts in their Sepex Leroy Somer setup but could probably work up to 200v they use IGBTs in thier controllers.
Renault used 114v nominial in their Sepex ABB setup, but they can be run up to 148v max.
But the Cooper is IGBT and should be most suitable for your voltage.
I would love to see a Solition SepEx from evNetics But i guess I will wait in vain.
There is a Open Revolt AC/SR/SepEx controller in the works that could be fitted with proper IGBTs to drive such a motor, you could check that up.
Regards
/Per