Originally Posted by IndyJeepMan
4l80e is the best auto behind an LS1. Its a turbo 400 with an overdrive.
True, but not much aftermarket support for them yet. They have a "soft" feel to their shift. It wouldn't have a crisp shift to it.
But if you want an auto, it wouldn't be a bad choice.
As far as mods to your TJ, not sure. You can get a stand alone computer and harness. Do not know how to integrate it into your chassis.