I went with the Rover Tracks Heavy Duty setup and here is what I noticed....
1. They moved my tires to the middle of the wheel well, they used to be further to the front
2. I have more ground clearance under the trailing arm due to the shape of the trailing arm
3. Much more flex than the stock setup, I think this is due to the fact that they use a softer compound in the rear bushing.
4. seems to have corrected the pinion angle that was off due to the lift.
One of the biggest reasons that I decided to go with Rover Tracks arms was becuase they start with 100% new parts unlike some others that just cut the stock trailing arm and weld on some tube.
well, that and the fact that they are good people