like this one.

http://www.victorylibrary.com/mopar/pump-tech-c.htm#cure

They cost about $400 new, so I have been trying to find one in the scrapyard. Problem is they are from mid 80's GM cars and those are few and far between these days. I understand they are also in Volvo's , but older models as well.

Does anyone know of a vacuum pump in a newer model? Maybe there is a Mercedes pump? I need it for a brake booster for an electric car I am building. It has to 12v, not run off the engine. The beauty of the GM one is it is all in one with a pressure switch built in.

Looking on Ebay as well.

Thanks