Bolt together trike HELP!

[Budget GoKart]

Soo junk lying around and already fixed most of my stuff (I know I'm slacking). Cut up a bike like Collin furze did and made some frame rails and bolted it to the rear end of a go kart. But the go kart is missing everything. I have a brand new axle and a bunch of new parts but I'm trying not to use them. Mainly because I don't have spare wheel hubs. But I have a rear engine lawn mower gearbox axle and frame.
Edit : how do I wire this engine?

 

[mckutzy]

Wire For what?? to turn on or throttle???

 

[Budget GoKart]

I figured out how to wire it to start it just this whole drivetrain is clapped out

 

[mckutzy]

Then why bother...

 

[Budget GoKart]

Because I'm bored

 

[Mr_mcrib212]

OOOOH a flat head V twin

 

[mckutzy]

No.. there is 2 different motors there... A vert V-twin with OHV and a Flathead...