The S2000 1st gen engine, the F20C, makes 240hp. A racing engine with shorter longevity could certainly be built to make 260hp or more without forced induction. It\'s all a matter of who has experience with high power, small displacement engines. Honda, Toyota, Suzuki, even Subaru and Peugeot / Citroen should be successful. Ford & Skoda will probably fall by the wayside.