if it is only just the boot that has split generaly you dont have to replace the whole shaft just the boot. It shouldnt be to bad to do to just replace the boot i done one today on a 32gtr and i didnt find it to bad to replace. i just removed the front hub assembly, seperated the cv joint, cut the old boot off, slid the new boot down the shaft, reasembled the cv joint, slid the boot down over the joint, clamped it down and refitted the hub.