Hi All

I have recently purchased the above bike for my son and need some help with it if you can please.

1, Can the ignition timing be changed on these? If so, how and what is the setting?
2, the clocks aren't working, totally had it, speedo, miles, rev counter, totally blank. Any ideas? if i need new one's, where in the UK can i get them?
3, where can i get a good performance exhaust and new down pipe?

many thanks
john