Cool! I don't know if a 50kW motor is going to work well for CarBEN, or not. The i MiEV motor is 49kW, I think. I have never heard of the Toyota MGR before. I am reading through the thread, now.
The Brusa motor I was eying is 160kW AC synchronous, and it is water cooled. And it comes with its own controller.
And I found this on the Google Image search page you posted earlier:
That image is from this web site, that also has a lot of useful steering set ups:
Steering System Overview
I'll have to digest this for a while. The Saab parts have the standard Akerman arms on the back, behind the wheel centers.