I was at the dealership today just to get a new key, but had them take a look at the bushings for me and this is what they said needed to be done. At first glance the sheet was horrifying. When I got home I hopped under the car and saw that the rack really needed to be replaced, did not know what to look for with the diff, tie rod ends and driveshaft, and could not tell how bad the bushings were. What do you guys suggest. I could wiggle the driveshaft back and forth so that it rotated very slightly. Is that a problem? If I need to replace the rear diff what are the most cost efficient options? Do you think that it needs to be replaced? Should I get an ARB air locker? Right now I am just going in to get the rack and tie rod ends done.