JackMcCornack wrote:
...And by mounting the upper arm at an angle (inside pivot lower than outside pivot) one can control camber...
Yup, precisely that; and that's exactly what GTM did with it (you'll see from the photos that the wishbones aren't mounted straightforward parallel to each other). It works brilliantly on the road - I drove the GTM in a back-to-back test against the S1 Lotus Elise for one of the UK magazines,a number of years ago and it compared very favourably indeed for a car from such a small company, developed on such a minimal budget.
The Renault Sport Spider has a reputation as a very well-handling car, too, but it was a commercial failure because the Elise came out at the same time and was significantly lighter and quicker.