To everyone with a limited slip rear axle in a Ford Ranger or Explorer around a 2003 model, be prepared to dump between 500 to 1000 bucks into the rear end. I've had my '03 Ranger about 4 years and it had only 33,000 miles when I got it. It now has 100,000 and I just had the rear end fixed for the 2nd time. Ford really messed up with this rear end. From what the mechanic told me, this rear end does not have the proper spring set up to hold the clutch plates in the right position. I'll admit the first time my rear end tore up it was partially my own fault. A 2wd Ranger wasn't meant for the torture I put it through but it still shouldn't have broken the teeth off the spyder gears. The clutch plates were nearly nonexistent when the mechanic tore apart the rear end. I got new gears and clutch plates installed for about $500. Just recently, less then 10,000 miles from the last breakdown, my truck began knocking again like I read in this forum. This time I had been driving it right, taking it easy, and it still broke on me. Well this time the mechanic said it was no use trying to fix the rear end so he got me a normal rear end for my truck and trashed the limited slip rear axle. As sick as I am about losing my mobility, at least this rear end shouldn't break anytime soon. My advice, if you want mobility, stick to a 4wd and stay away from this particular rear end.