I recently purchased a used work truck and knew there was a winding noise in the rear so I talked the guy down on price a good amount. I just got a call from the mechanic and they said it needs a new rear. A new rear costs $2,600 with a 100K mile warrenty. I have asked the guys at the shop to call and find a used rear and see if it would save me a good deal... What would you guys do? I have the money to do a new rear but hate to do that on a truck that has 144K miles.