As for my project, it's a mishmash of various parts.
I have been mostly documenting it over at the Apriliaforum
https://www.apriliaforum.com/forums/showthread.php?381268-Spookex-s-little-RS50-of-horrors
Since I only have a 50cc license here in Japan, I got myself a rather neglected Aprilia RS50. Decided to upgrade it slightly, but it went off the rails (on about page 4). Now I'm trying to make it work with GSX-R1000 K1 front forks, but GSX-R1000 bridges were too expensive, so I used the ones from a YZF-R1 instead. Since the GSX-R1000 forks have dual calipers, I needed a wheel that supports those, so I got one from the MC16 since it is the same size as the RS50 front wheel, and it has a speedometer drive.
Then I got myself a swingarm that probably came from an ND5 RS250, but with no accessories, so I figured out how to modify the RS50 frame to fit it, got a rear shock and link from a different year YZF-R1, and used that. For the rear wheel, I wanted a wheel that matches the MC16 look, but in the more common 17-inch tire size. MC17 CBR250 wheel was perfect for that, and it was also in the stock width of the RS50 wheel.
Here are some recent pics (and yes, I am building a motorcycle in my apartment on the 2nd floor)
