While i wait for a scirocco R tune. I will give a short summary of my experience with the 86 GT.
I used a G27 wheel, with the ABS 0, and manual, on Time trial circuit. When i first drove out with it, it seemed very solid, very conservative, and took the corners very well. The outlap made the car seem very boring, but when i put my foot down on the first lap, the car showed that it still had some power in it. It didn't step out too much, but when you put your foot down coming out of the corner, its wheels started to spin, with no grip. You could drift it around corners if you wanted to. But when you drove it well, with control, it has great handling, better then the stock version(obviously), it's not as agile as some of the MR lightweights, but it did beat the time of a semi tuned Mclaren MP4-12c, but was slower than a mazda Mx-5 TC.
It is easy to drive, and has great control, but also can be fun to drive if you really push it.