Go Kart Pedal Use

Thinking about a wide road Go Kart, proabbly using a 125 or 150cc engine. We proably be the engine of a motorcycle so there will be mostlikely manual. Any ideas on how to convert the speed and pedals to work on a go kart?

Too involved to adapt to the inch motorcycle engine. Just go with
inexpensive 10 + Briggs & Stratton. The parties are
at their disposal are many ... centrifugal clutch and all ....

Just my opinion here ..

I would put BMW V12 5.0 !!!!! engine