Just been doing this very job today!
I didn't fancy the change of clutch case and shaft as this makes my 200 engine incomplete for resale, and I beleive it's an engine split to change the kickstart shaft. So I've done the following;
Careful trimming of the frame next to the swinging arm, and shaved a bit off the top of the kickstart pivot top and and the job's a good 'un! New brake lever made today, all fitting behind the frame. I had to start the new lever by welding it to the arm itself that pulls the cable. I removed all the old lever from its pivot on the outside of the frame, so that's awaiting a tidy up in the lathe. Then using some flat bar, I've made up a new lever from scratch, but using the foot pedal itself welded on the flat bar.
Doesn't sound very clear, but I could email pics to someone who can put them on here, as I'm too dim.
Also be careful if you need to source a kickstart for an RTL, as there are different spline patterns for older and newer models. I have 2 RTL engines with different kickstart splines!
Best of luck!
Bill.