Yes sure affan, as I have guided like 12 or more riders through the conversion process,
Option 1 : in start when kabaryas were unaware, the CDI unit and complete system pulled from CB 250 Night hawk costed 7~8k and fitting charges in lahore were like 2k but now almost every kabarya knows that CB NightHawk CDI is bolt to bolt fit to CD 200 Road Master, so there asking price has reached to 15k and after negotiating me and a biker friend managed to get him down to 10k and fitting charges were same 2k..
Option 2: Get a local customised CDI (yamaha CDI) some mechincs use it parralel to the old point system, I dont know how but it works and no other upgrade is needed.
Option 3: I have seen couple of RoadMaster upgraded to chinese CDI system as they are also bolt on bolt fitting specially 200cc and 150cc chinese engine.
I hope it helps..