Last year we were testing a FS car at Brunters and I had a chat with the guy who owns the yellow sister recce car, this was essentially a left hooker cup car but with custom cages welded cage, AP brakes, not sure on size but nothing smaller than 16s could fit over them, had a bias pedal box, as well as other rally goodies. Dare I say it, Alister Mcrae probably used it when he drove for VW in the 90s...