Coil spring systems do not have axle wrap, only leaf springs. What you saw on the TJ might have been a custom trackbar, trilink system or radius arm. On a leaf spring system, the ladder bar or 4 link is set to a fixed distance in order to overcome the pressure of axle wrap and wheel hop.
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Here is a site with pictures:
http://www.4x4wire.com/jeep/tech/susp/axlewrap/
edit-
Here is a site with pictures:
http://www.4x4wire.com/jeep/tech/susp/axlewrap/