What are some ways to increase power in a smart car?

wats the biggest engine that could fit into it? can you upgrade brakes from drum to disc? any ways to increase horsepower? should i take it into a ferrari, lambourghini, porsche or any other fast car tuning shop and have them tune it?|||The whole point of a smart car is not to have a huge engine stuffed into it, but to have a perfectly matched engine that has enough power to drive the car for normal use while using minimal gasoline. The places you name would be totally bewildered by the car and unwilling to touch it. You would need someone from an odd shop associated with Road %26amp; Track if they felt a sudden need to warp the use of the car.