The vertical adjustment would be a good feature to build in if you were planning on being able to change the ride height on the rear end.... The adjustable center pivot point would keep the bars parallel with the ground.... Same thing can also be done by having multiple mounting holes for the outboard ends of the bars.... Personally, guess I wouldn't like all the extra weight on the rear end housing that the adjustable bracket you refereneced... Unsprung weight is high enough on a street car.... As a rule of thumb, one pound of unsprung weight equals 10 pounds of sprung weight when it's time to tune on the suspension....