74 harley dirt bike 250

Ditto on what Dover said. That's the one with the cool tank graphics. This is a good place to get any advice/help you would need:

http://autos.groups.yahoo.com/group/Aermacchi/?v=1&t=directory&ch=web&pub=groups&sec=dir&slk=9

and if you need parts, throw the request out to the yahoo group. A lot of the members have nos stuff ( including me) The parts are pretty common.

I've got a '65H 250 sitting in my garage waiting for a resto...and waiting...