Good luck! I searched for a very long time to find one when mine exploded. Most breakers think they have one until they realise it's from a TT and 4 wheel drive!
I think Ivor is right on the extra parts as well as I even thought of going back to a 5 speed for a cheap fix (bodge-artist) but it wasn't that simple.
Buy a new one like I did in the end, bargain.