How do I know..

Not an expert on 009's, but in general the part no's on the dizzy are usually where you can't see them - might need to pull it out to look.

Once you have found the no., try Old Volks Home for a cross reference/application list.

If you have no vacuum unit on it set it with a strobe to the instructions you found, or use this http://web.archive.org/web/20041013061439/http://www.w-p-c.com/buggy3.htm