In the standard position. We looked at changing it but decided not to. To be honest I got such a negative response from Ross H when we discussed it that I didn't even bother plotting it.
Maybe it's worth another look but as you say the roll-centre would likely be very low.
The rear camber on my car seems to work very well with little counter-productive effect, from Ross N's posts it seems his similar settings are on the money also.
On the subject of my car: theoretically things are much improved now. The rear bump steer is now negligible. This was achieved with a 4.75 degree "castor" setting on the rear, slightly different to Ross N's setup but close enough for gov't work.
The rear end is certainly a bit of a sod to set up and get working but I have high hopes now. I have some events coming up with another car so I'm still not concentrating on the GT but I hope to get it to the track soon for testing.
I've neglected something, so time to make good -
A big thanks to Jim Cowden for supplying his beautifully made and fantastically useful suspension (and other) components to me at short notice and at reasonable cost.
This saved me hours and dollars developing things and I doubt we could have done a better job.
This once again demonstrates the usefullness of this forum and the quality of its contributors.
Tim.