This is my first truck with a lift. That being said, I am not really sure how often I need to tighten stuff up. I didn't install it myself so dont really know what the deal is. Do I need a torque wrench? Ive got 27K on now and probably about 25K of that with the lift on. Any input would be much appreciated.

Never hurts to go around and check for loose bolts. I've had problems with the four bolts that secure the sway bar to the frame working loose. Aside from that, the rest are usually tight when I check them. I believe the instructions said to go back and check everything about 500 miles AFTER installing the lift, but gives no indication of how often after that. I MIGHT check mine every 3rd oil change or so??