I bought a rolling basket case, '80 Puch Newport, totally rebuilt it, the whole moped, from the ground up, not just the engine. It's currently got 4200 trouble free miles on it since the rebuild. But I also have an '03 Tomos ST that I bought new, and am rapidly closing in on 16,000 miles on that, also completely trouble free. The neat thing is, both the Puch E50 and the Tomos A35 can be rebuilt indefinitely, and parts are cheap and plentiful. Peace, Jerry.