Have'nt logged in 4 some time.When last I did ,I spoke about lifting my XJ 2" and feeling a slight vibration at higher speeds. I think whoever said it might be a u-joint issue was probably right ,but I've been driving it for over a month now and I think I worry too much.It's very slight and I'm not going to sweat it for now. Thanx guys ! I did build a safari style roof rack at work and mounted it on the existing stock roof rack bars. It came out sweet, I climbed up and jumped up and down pretty hard, it's light and sturdy. The best part is I used left over material from work so it cost me nothing and once I painted it black it looks good. There's something cool about going the budget route. Later!