what do you need to do? i know the basics like mirrors, lights, horn, back brake light ect thanks (bikes a honda cr 125 1990)
google it, plenty of info out there, its hard to get a off road bike road legal and sometimes not worth it but if you dont care about cost go ahead and do it..
Take it you'll only be using it for short blasts, Hate to think what your rebuild bill would be elsewise. .
Nicked this from another forum (sorry if I broke the rules) http://www.pitbikeclub.co.uk/showthread.php?t=77536