I've listed a relatively rare 4-speed Minarelli Motor (see attached pic), and a '78 Puch Motor on ebay. Both are running motors with great compression and spark. The Minarelli Motor is off of a late '70's Safari Moped.
The link to the Minarelli 4-spd Motor ebay Auction is:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=1876057637&ssPageName=ADME:B:LC:MT:1
The link to the Puch Motor ebay auction is:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=1876058336&ssPageName=ADME:B:LC:MT:1
MoPedLar