Which 4wd system do you have (Quadra-Trac I, Quadra-Trac II, Selec-Trac, or Quadra-Drive)? The 4wd system you have, and year, determine what front driveshaft you have. It gets a bit convoluted, and the best way to figure it out is just to visually ID it. This should help: WJ Driveshaft...