Mild lift = anything under 2". SOME 29" tires will fit without any lift at all, while other require lift and or off-set wheels (the tires are so wide, they'll rub on frame at full turn, need to get a different wheel offset to get the tire moved 'outward' away from frame). My tires rub a little on FULL turn to the left, but it's only the last 1" or so of turning so I just deal with it. I recommend any of the following:
* Spring spacers, new rear shocks & strut mount flip = $200
Cheap, quick (4-8 hours) & easy. Will lift the while truck (frame & body clearance), but not give any additional suspension travel.
* 4-door coil springs (only works on a 2-door), new rear shocks & strut flip = $??? cost of strut flip & shocks ($40) + used springs
Don't know much about how this affects ride quality, but it will give additional frame & body clearance while giving additional suspension travel in the rear. The front can be made to give aidditional wheel travel if used with OME struts (the ONLY struts on the market that will give additional front suspension travel), but expect to fork out some more $$$ (I've not priced just the OME struts, call low range offroad if you want pricing).
* OME lift kit = $700 + S&H
Available from low range offroad, this is the lift I have. It's the 'cadillac' of lifts. Much better ride quality, and additional suspension travel. If you have the $$$, get it.
http://www.zukiworld.com/forum/index.php?topic=20578.0* Virtual lift = free(ish)
Virtual lift is cutting, bending & BFH (Big F*cking Hammer) your way to clearing bigger tires. Cut, bend or bang wherever the tires rub. This has the advantage of clearing tires for the price of a hack saw, pliers & a hammer while keeping the center of gravity as low as possible.