Is there any way to put a turbo in a cayman S? I'd love to hear the sound of it as I blast down the freeway.

Yes actually. The best solution I have heard so far is to install 4 turbonators in series with a battery placed in the front trunk. The battery then drives the four turbonators and generates about 30lbs of boost. This is all without dropping compression level of the engine and on 87 octane as well. Of course, diesel will actually help the engine run cooler so that is an option, bear in mind that the car may have reliability issues within the first few feet or so...