It wouldn't be worth it. You would go through a lot of trouble to put in a motor that is a lot heavier, and a 22R is going to be less horsepower then the 1.6, and no fuel injection. A 22RE is injected and probably would give a slight increase in horsepower, but again I think it would be pointless. In a Samurai that only makes 65 horsepower it is an improvement.