Vintage go kart with a snowmobile engine

That is freakin bad AZZ!

We had a 70's three wheeler (sat in it with tiny tire up front) with a 440cc twin two stroke in it, death vessel, but fun!

Personally I would pull the motor and stuff a CR125 or CR250 motor in it. Sell the Harley motor to some collector who can get parts for it and not run it much. If you really want to run that motor, make sure the cases are sealed good or it will go lean and hole a piston.

If you get it runnin, post a video would love to see it!!