Sears Sabre (Puch Dakota) was my first bike. Thought it was a moped when I bought it because I was dumb and registered it as a moped for the same reason. Still have it in Dave B’s garage. Thing is awesome. Lots of compatible Puch parts but the cylinder is some weird voodoo stuff. Take it easy on the transmission, and be careful with the clutch cable adjustment. Too tight and it’ll pop out of engagement.
If you know where to look, there’s a super rare 65cc kit floating around in the EU for it.