First off no need for any comments that I cannot off road due to my sway bar. I do not off road and daily drive it, so I care about more about handling. I need the 4wd for the snow in my area, truck meets my needs.
I have put a couple of rear sways on previous vehicles that were just larger diameter than stock and then made a very noticeable difference.
Basically the same case here. DCSB 4WD 2nd gen does not come with a rear sway and it is sloppy like a whore in a corner. I know this is not the case for those off road since a loose rear keeps the wheel in contact over uneven terrain but on the street the terrain is flat. So this keeps the truck nice and flat and you feel more slop in the front than the rear now.
I went with the Addco over the hellwig since I ran addco before and it was a larger bar over hellwig as well. Was about $150 for the kit which includes all hardware. Install is about a 30-45 minutes. Bolt brackets to axle and drill two holes in the frame for the endlinks, tighten it all down and go play.
I could not find any pics of this on the net or on TW either so I took a few to show hole placement and ground clearance. Only rear sways seen are typically on xrunners and not 4wd models. Pretty obvious this would get messed up pretty good rock crawling.
Last suspension mods for me is to get my 5100's in all around, setting at .85 since I do not have TSB and also to get some poly urethane bushings and new end links for the front sway since they are about 6 years old now. Upgrading over the stock rubber bushings and endlinks is noticeable I did it on my Z56 police tahoe.
Only sore point is they did not ship the correct nuts for the bolts that connect the end links to the bar so I used some other nuts and bolts I had but need to get them matching and correct length, if you look hard you can see one side does not have washers and the other side does. Not many places open on Christmas with 1/2 x 13 locking nuts on the shelf.