It is done often, just need A motor mount. Most will bypass the transmission for more power and use A regular 4cycle clutch on A jack shaft. Since you don’t shift on ovals. the 450s have some really trick bypass setups. If this is for A UAS setup, I think its A must for the HP free up. But we don’t have A UAS track close to confirm.
It would be for road racing. Oh, right, forgot about the offset design of those. I’m not a huge fan of dirt kart racing. Might be fun, but that is what my quad is for. I have a shifter already but would be great to save on another chassis or roller if I already have one that would work. But, I can see now it might not track right with a dirt especially oval chassis.