To start the ball rolling, I have just done 20 laps at Donington in it with basically the default setup. (changed to softs allround and altered the steering lock angle to suit my rig).
The problems mentioned by TT were immediately apparent, especially the snap oversteer under braking and sideways acceleration and to a lesser degree, overheating brakes.
However, by the end of the session I could get the car round ok, minimising the problems by altering how I drove only...I didn't stop to alter the setup.
Best time of 1:28:3, which is reasonable but with setup changes I would expect to be able to get within sight of the GT1 lap record with it.
After 20 laps my worse tyre wear (front left) was only 6.8 and my rears were only 4.9 wear.
Brake temps were high, but managable.
What I found was the most of the problems are simply due to the exraordinary power available in the car....too much acceleration and it will try and swap ends....too much engine braking and it will swap ends.
I found you have to be extremely gentle and smooth on the throttle when accelerating out of corners....much more so than in any other GT1 I have driven. It may even be better to use a higher gear than you would think appropriate too, it hardly effects the acceleration due the tremendous power available. Under braking, you need to change down very late when compared to others, ie dont use any engine braking (not that you should anyway, but most of us do). This will lock up the rears everytime, especially the lower gears, regardless of diff settings and is the only way to avoid the snap oversteer.
Do some testing if possible.....but I reckon working on driving technique rather than trying to dial a setup is the way to go.
PS...I may use this in GT1 sprints for S10....it can be tamed.