Anti-wrap ladder bar?

Does anyene make a ladder bar that attahces top and bottom of the axle to control axle wrap, or is this something I am going to have to fabricate? I dont have readily available resources to allow for something to be fabricated, so I was wondering if someone made one to sell. Just curious if anyone has links or ideas. And yes, I searched. Thanks for any and all help.
josh

Sam's Off Road makes one.

http://www.samsoffroad.com/samsoffroadsto/index.html