Polaris switched to Kohler for new production Brutus, but not a larger or more powerful engine. To get more power, they'd need to change out the entire hydraulic system, not just the engine.
Realistically, if you need more power, you probably are looking at something like Bobcat's Toolcat -- more than double the horsepower, lifting and towing range, and with a price to match.
Realistically, if you need more power, you probably are looking at something like Bobcat's Toolcat -- more than double the horsepower, lifting and towing range, and with a price to match.