If it's like the ZX td you'll have a little work on your hands. Underneath the car you'll find that the bottom of the gear lever has a linkage that goes to the gear box.
1) Undo this nut and bolt assembly. Only 1 nut and bolt.
2) from inside the car undo the 4 nuts and lower the gear stick to the ground.
Not to sure but I belive that you can replace just the stick part but if you going to a scrapper then you might aswell just change the hole thing. Just remember to grease well up when re-fitting. Hope this helps mate.