yes, awd as tmccuda said. no 2wd option. lift is higher than stock torsion bar set up would do. truck has new tires and stock wheels (20"). tho they are 275 65 20 instead of 60 series. unfortunately wont fit on stock ride height( so im told).had vibration with old tires also. vibration starts at 10mph on up, whenever on the gas.suspect is frt 1/2 shafts,but can only find aftmkt correction shafts for 06 and up (kore). any of u truck guys know of any other axle companies. as I said before, lift looks like torsion bar keys and rancho shocks. nothing involving differential or control arm mounting points. ride height is more like 2500 than 1500. truck is not skying.im figuring not too commonly reported, due to truck being awd. thanks again for the input from everyone, gregg