I am running a set in the front. As usmcdoc mentioned earlier, they are cheaper than shocks.
The lower end is bolted into the spring perch:
At the upper end, Teraflex offers a set of stubs that fit into a hole on the frame (from factory with hole) and weld into place:
I only went through one front shock before adding them. The shock used to be my limiting factor in the front but as it is now, the strap limits the shock at about 3/4" from full extension. Here's a link to TF's full set:
JK limiting straps
I thought about adding them to the rear but at this time they are not needed. My limiting factor in the rear is my factory rear sway bar and links. They stop the rear shocks at about the same 3/4" from full extension. The shocks used to be the limit until I added a set of
PP rear upper shock mounts. Which according to PP move the upper mounting location down 13/16" if I remember correctly. Which was a perfect amount for me.