is it ok to adjust torsion bars to change my cars stance.

The worst that will happen is that you will bottom out the suspension and this can cause problems in certain driving conditions, but generally only a harsher ride. Leave about an inch between the Lower Control Arm bumper and framerail and you'll be fine.
^^^^^^^^^
What he said.
I've always adjusted the torsion bars of every mopar I've ever bought until I get the right stance, then it's off for an alignment.
Chevy guys used to hate us in high school because of how easy it was to raise or lower the front end LOL.