If you lift your T3 it will put quite a bit of stress on the cv's and that makes them wear way faster then when you don't lift the car. Part of that is because you stretch out the cv's. With these spacers, mounted between the gearbox (or front diff) and the driveshafts, you spare your cv's. This is for one driveschaft, you need two sets if you want to do a 2wd and 4 if you want to do a syncro
For the cv joint spacers,on a 2WD T3 you have to mount 2 at each side of the shafts (4 cv joints, 4 spacers)
At syncros, you have to mount 2 at the front side (differential side) and 2 at the rear side (wheel side) because Syncros came with the spacers at the gearbox side, so you need only 4, like the 2WD.
