I think that would be cool. Idk much about the bigs engines on go karts but how do you put the power to the axle? Do people put a big belt drive on it or what? I dont know anything about these.And I still cast my vote for the "other" predator - the V-Twin with something like 22HP out of the box, with no mods at all, just ad gas and oil and go.... Think of it as an "economy" twin class.
Or not so economy if an association allows removal of governors as a first step, and that morphs into changes to cams, carbs and internals after outfits like ARC make bullet proof flywheels, forged aluminum rods and whatever else becomes necessary.