Well, when I bought the truck in December, it had one bad front sway bar link, and the other wasn't even there. The idler, and pitman arms were so terrible, that I when I jacked up each side, I could move each wheel back and forth a good 4 inches each way. And that was using only one hand. It's had 20 year old factory bilstien shocks, with 200,000 miles on them. And I don't know if you've ever seen the factory shocks these Yukon's come with, but they are really wimpy. Trying to accommodate to those soccer moms, and give it that nice "floating" ride. So after replacing all those parts, and upgrading to larger shocks, the difference was night and day. It was actually a little scary to drive when I first bought it. As far as the steering stabilizer goes, I wouldn't waste the money to be honest. I used the Moog trail boss kit. Which was designed for gmt800 trucks. I had to fabricate, and weld on a custom bracket. The bracket wasn't difficult at all, but the kit cost about $85. Not one single bit of noticeable difference. It could fall off, and I wouldn't even know, because it did nothing for my steering. So all in all, that was a waste of time, and money that I could have used to do a better upgrade. My steering isn't bad at all, but it has that factory slop that all gmt400 trucks have, so that's why I think I'm going to hunt down an xj steering shaft, to see if I notice a difference at all.