Thanks for the swift reply. The head bearings are being replaced, so I don't anticipate a problem there, He's replacing them with a newer type too. You say they are pretty tough, I forgot to mention that he wants to do a bit of Green laning (nothing too harsh!), will it cope with that?
Did you buy yours privately? there's a big difference between your price and the one the dealer is asking. He is doing a complete rebuild, in fact when I saw it at the shop it was in about 100 pieces.
Can you still get the original decals for them? I know for a fact that there is a small dig in the petrol tank, so I'll probably want to get that knocked out and resprayed.