My lift kit came with a track bar relocation bracket, but that's just because the track bar would be too short with the lift installed. The rear end would be pulled to the driver's side.
I also have a spare set of rear sway bar links that Rancho sent the previous owner by mistake. I've though about cutting them up and sleeving them and making them a quick disconnect style. Unfortunately, it's one of those low priority projects that just never gets done.
I think changing out the rear upper and lower control arms for ones with heim joints in them would allow the rear end to flex quite a bit more.