Beginner Question
The reason why we manufacture both adjustable is because. With a adjustable pan hard bar, when you lower a vehicle the rear end shifts and the adjustable bar allows you to recenter it back under the vehicle to eliminate binding issues. And the adjustable lowers allow to you center the rear tire in the wheel well. And they also are (at least a single adjustable) recommended when using a aftermarket rear end to allow for articulation when if comes to offset mounting locations. If you have any other questions feel free to ask and I will be more than glad to help.
Thanks
Brad

