i have a 2007 4x4 6. 7 and it went into CC Driveshaft for front and rear pinion seal replacements due to them weeping slightly. They called and said the driveshaft cv is shot and needs to be replaced. I was so happy the krappy rear end had not gone out and only needed a $100 r and r job vs a $1700 rear end replacement. I said just get a exchange front driveshaft or get mine rebuilt or get one from the dealership in Corpus. Guess what, the dealership has no driveshafts and Larry Cook called 7 other dealerships trying to find a new driveshaft, no luck, they are all out of stock and waiting on National Backorder from Dodge!! So now I am going to pick up my truck minus the driveshaft since its in the back of the bed and drive to San Antonio Brake and Clutch and they are going to completly build a new driveshaft with the cv joint from my old unit, they say they had several come into there shop for the same problem. The aftermarket has not built new yokes to change out to a real ujoint and get away from the cv joint. So check your driveshafts and watch this thread if you have a 4x4 dodge, no drivehafts if yours goes out. Anybody got a new one they want to sell by the way???? Thanks!!! Oh yea, sorriest truck i have ever owned, 88,000 miles and toss's front driveshaft and no stock, just like the waterpump deal!!!!lol All one can do is laff... .....