I have been using the Corbin dual touring seat on my R. First off, it looks a bit odd without the backrest of the GT for which it was designed to fit with. Having said that, the extra setback of the seat makes the seat peg relationship almost perfect for me. Since I don't yet have the backrest from a GT, I put a seat bag that looks sort of like a seat cowl, and it hides the mismatch pretty well.