adjusting the torsion bars will change the downward travel a bit, but not much to really worry about. your main limiter will be the sway bars, so get some disconnects.
As long as you trim enough plastic, rubbing should not become an issue even under compression. I run 32" BFG MTs and have no rubbing problems at all. been running them since last april.
Synchro
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Synchro (aka Kirk) 2000 Xterra SE, Alpine Green, 4x4, ARB, 32" BFG MTs