Dont by the GSP one if you have a lift, ill pretty much gurantee that the boot will tear There is no difference between the AWD and 4x4 axle. What you need to do to change it out is jake it up, use jack stands please!...Then take the wheel off, if you have auto hubs you need to take the dust cap off, then take off the snap ring. The snap ring is not that hard to take out, but difficult to see. After that, unbolt the lower A-arm, 1 bolt in front and 2 in back. Carefully lower the A-arm down as not to ruin the balljoint. I set mine on blocks of wood so that its just not hanging there. Unbolt the 6 bolts that connect the CV shaft to the front diff, they are grouped in pairs. Then bang the hell out of it with a hammer. If youve never taken a CV out before, its going to be rusted/stuck on pretty good even with all bolts removed. PB bolt blaster works well for this. Make sure to hold onto the shaft when banging on it with a hammer. The shaft should then fall down, then just slide it out of the hub, pushing towards the passanger side. Then install new shaft opposite of removal. Torque everything to spec.
Hope this helps.