Awesome work..I suspected that may be the case a couple years back when I replaced the clutch on my brothers Bear Tracker. I had a used YTM200 clutch on the shelf when I removed his and compared it they seemed near perfect fit..
Anyway maybe you could post the part numbers you used for the "data-base" for future use..
Current toys..
1986 Honda 350X..trail bomb!
1985 Honda 250SX..my main mudder
1985 Honda 250ES..Back in Black Trike
Current non-trike toys:
1990 Honda TRX300FW
1995 Seadoo GTX
1998 Polaris Indy Lite 340(Nearly new looking)
1998 Polaris Touring 500
1998 Club Car (electric)