Off Road Design Sway Bar disconnects
Because the sway bar for the Suburban (especially the 3/4 ton) is so monstrous, I decided a Disconnect would be a good idea. I bought one from Off Road Design (http://www.offroaddesign.com/catalog/swaybarkit.htm). Cost me 95.00 plus shipping, and was a VERY well made piece. I installed it in my driveway easily, and didn't have to jack the truck up at all. I did need to loosen the Sway bar quite a bit to get it to move around, and I needed the hammer a few times to line things up, but it went well.
I haven't had a chance to try it out off road yet (I installed it Sunday Sept. 3 2006), but it works well on road, and actually adjusted for the slight lift as well.