I just bought a new seatpost for the Xizang – Moots seatpost just to lengthen the cockpit. Think titanium might take some of the buzz out of the ride. Going to wait until it is built up before I think about switching the fork. I have a Pace RC36 evo pro on my klein (which will become a singlespeed) that I might put on the GT …. then maybe a RC31 C Pace on my Klein.