The main Group B cars are in the PSP version - the S4, the RS200 and the 205T16 so it would be fair to expect them in GT5. The Quattro would be a great addition too, I remember how much fun it was in the first Colin McRae rally game on PS1. Apparently in real life it was a bit of a dog to drive though.
The S4 is great fun, it takes some taming but once you do it's fantastically fast. I posted elsewhere that I can do the Nurburgring using standard physics in 6:55 despite long sections bouncing back off the maximum speed of 157mph. It runs in a basic 449bhp form which is more than it did in GT4 if I remember. Would love for it to be tuneable in GT5 to see if you can get more practical speed out of it at the 550-600bhp it was capable of running in.
The S4 is great fun, it takes some taming but once you do it's fantastically fast. I posted elsewhere that I can do the Nurburgring using standard physics in 6:55 despite long sections bouncing back off the maximum speed of 157mph. It runs in a basic 449bhp form which is more than it did in GT4 if I remember. Would love for it to be tuneable in GT5 to see if you can get more practical speed out of it at the 550-600bhp it was capable of running in.