-Puch / Tomos...parts everywhere. easiest by far
-Motobecane / Peugeot / Vespa / Derbi...bunch of parts too
like whats been said..not cheap and hard to work with
-Garelli / Minarelli / Morini...parts are out there, but you have to
look. some are harder to find since theyre no longer made.
Batavus / Trac / Jawa..I have never seen anything aftermarket