I stand corrected. I know for a fact that the GK bar is slightly too wide and rubs, people have to bend the bar to make it fit the RD or J2. I didn't think about swapping from RD to XD.I have a 99 tiburon swaybar on my XD2 and yes it is a 17mm , I picked it myself out of the Junkyard
make sure you get the metal endlinks too and poly bushings