I have a 2002 Sport Trac 4x4 with about 125K miles. On Thursday evening I heard a clunk in the rear end when moving slowly and turning to the right. On the way to work the next morning, I heard a couple more clunks again at low speed and on right turns. At lunch, I drove a few miles and it went downhill very quickly with increasingly louder noises that caused the vehicle to jerk. I managed to get it to a dealer for service. After taking a peek, they said that the rear-end (I'm guessing the limited-slip differential?) pretty much exploded and it's a real mess in the housing. They are planning to start rebuilding it this week after getting the replacement parts, which they said was pretty much everything inside the housing. The estimate is currently in the $1800-$2000 range but I should get a better number tomorrow. Based on what I experienced, I have no doubt it is going to be expensive but does this sound like the right ballpark for what such damage would cost? Thanks for any help!