Ahh, the days of unrestricted mopeds. The Garelli was one of the best, but pretty fragile. My fizzie with a 65cc kit, some not so subtle porting and a K&N bodged on was good for over 55mph on the flat and 65mph downhill
I'm still tempted to do a James Whitham and buy a 72-73 yellow restored minter just for the hell of it.