or do what i did to an n600
drop in a hayabusa engine.
a bit of fab work but the end result was nice.
better have some driving experience though as this thing could get loose with little provocation.
i have seen it at several car shows.new owner restored it and kept the busa engine swap in it.
You could of just dropped in a Honda GX160 engine and run the pull cord out the front grill.. just bugging.. they are fun cars and if you sit in the passenger side you can jam your foot against the fire wall and activate the brake and gas pedal, it'll scare the driver ..