Our front driveshaft has a cv in it...mine is shot. Makes a lot of noise and I can move it up and down about 1/2 an inch. I am going to see about getting a shaft made with ujoints instead of the cv. When I spoke to the guy in Moab he said his shop said $170 to rebuild his shaft or $90 to build a ujoint shaft that would be stronger...sounds like a win/win to me.