Thanks for all of the help everyone.

I have been considering adapting a modern sport bike front end to the bonnie to gain the better forks and of course dual discs. I understand that the Bonnie came with dual discs as an option around 1980 or so but I haven't been able to find any parts yet for the right side disc. I thought it might theoretically be easier to just fit up a newer jap bike front end. Anyone know if there is a direct fit front end?