with stock keys all you should need to do is jack the frount tires off the ground and let them hang ( Jacking up the frame) and loosen the torsion bar bolts all the way out, not sure about the keys, That is how i did it when i pulled the bars for my lift, if you go with keys you willprobly need a puller to reinstall the keys into the cross meamber.

 

FYI 33's fit stock . You could lower your truck n they'll fit . I'm just saying get the tires u realy really want, or fancy wheels too , then decide wut $$$ + time u want on lift . Cause cranking yours $0 rear 4"blocks $40 ish , allingment $60 =$100 . But new shocks in future.. I didn't get new ones for a year** liftnw8z kit sounds pretty good with the shocks . new ones alone r like $50 each .... idSo bottom line from my experience just get tires . 33x12.5 s are perfect might even pass with 34's . I've heard of people going cranked stock torsions n 35s but I'm thinkin wheels can't b too offset for turning

 

With a leveling kit or a body lift you could pull off 33s,I have seen one truck with a leveling kit and the torsion bars cranked all the way running 35s but I wouldn't do that myself. It looked pretty good though!

I have a 4" suspension lift,3" body lift and 37" tires,I personally haven't figured out why people hate body lifts yet. This is my second truck with a 3" body lift on it and I haven't had any issues.

 

 

4" blocks ,cranked torsions , new 33s ,lots of space billy, get to the chopper