I have a 94 GMC Yukon 4x4 SLE package,and its a 2 door, 350 tbi engine,4L60E auto ******,tow package,air shocks,PW,PL,Rear windshield wiper.Tires have 80% tread all the way around and also has two matching spares with about 85% tread and the factory spare.4wd is awesome never had any problems...