4x4 Rear Constant Velocity Shaft Rebuild Kits for 1970-1979 Ford 1/2 ton 4x4's. Rebuild your rear Double Cardan constant velocity driveshaft yourself with one of these affordable basic Kits! Our Custom driveshaft QUADKITS® feature 3 USA made heat treated, alloy steel, greaseable u-joints, 2 Cup Type Grease Fittings, CV Centering Yoke Assembly or CV Ball/Socket Kit, and Threadlocker. We offer Custom Kits that include your choice of either a CV Centering Yoke or just a replacement CV Ball and Socket Kit. If your CV Centering Yoke casting is OK, you can save money by replacing just the worn ball and socket, but be advised you will need a 1"-1¼" blind hole bearing puller to remove the old seat and a hydraulic press for installation.