I've got a couple of 3 speed parts around, I think maybe the counter shaft and maybe a sliding gear. If you're interested, I'll root around. I ran a 3sp/R on and off for years, and mostly, it just got me in trouble. You know, hanging out with a bunch of your buddies, showing off the neat tricks you can do, like riding backwards, falling over with your leg caught under the bike, all your buddies laughing so hard they won't pick up the bike off you,,
. As I recall Alcohol may have been involved, h'mm.