I have recently purchaced a 95' tahoe, ls, 2dr. I want to lift it 4" - 6", have not decided yet. I have seen kits that include a new extended knuckle and kits that do not replace the knuckle. I was wandering if anyone has experiece with either type of kit? Do both kits lower the diff. housing? How does the different kits affect the cv shafts and vibrations? I know in the rear if I stick to block, ride will stay the same but axle wrap will increase. Replacement springs will minimize, but not stop, axel wrap and possibly stiffen the ride. just looking for experience and opinions.