Hey,may be too late,but I figured I'd let ya know anyway.. When I lifted mine 2-1/2",the Driveshaft lasted about 10 miles. I got mine from a '92 Standard Cab,Longbed 4x4 Ranger. It had the Double U-Joint on the Transfer Case End,Single U-Joint on the Diff End. I did have to Shorten it though,around 8-9". I did the shortening Myself,taking my time,aligning everything nicely,and it actually runs smoothly.