Im sorry to say by the time you add the belts , pulleys, sprockets and jackshafts you will end up with a frankenstien that will only stay together on a full moon. Like dax says in the listed post above, trade with someone that has a horizontal shaft. Then do as Large Filipino said put it on a trailer pusher. Heres a few links my friend.
If you go with a trailer pusher, post back in this thread, and ill give you some centrifical clutch and jackshaft suppliers. I also have a mini bike supplier that you could modify the front end so it hooks up to your bike post like the videos. graucho