[Frag_dude]

I wouldn't rule out a ram air intake or a performance cat back exhaust so quickly. With an rx8 its hard to squeeze out power, so personally I would take whatever i could get. But with just an intake and an exhaust one wouldn't get much more than a better exhaust note (a lot better exhaust note and maybe some flames).

I also don't think that lightweight pulleys are more hassel than they are worth. They run under the same basic principle as a light weight fly wheel: reduction in rotational mass. Just make sure the set you get don't underdrive too much.

As far as a turbo, supercharger, or nitrous well....

If you plan on driving the car and hitting the redline often, don't expect it too last too long while its under boost from one of the few turbo kits out there.

Supercharger? i don't think there is a supercharger kit for the rx-8, but i could be wrong. If i was, then it goes under the same category as a turbocharger. Hell on the apex seals.

Nitrous...now theres an idea for a rotary engine. Inject a cold gas into the combustion chamger and f*ck up the apex seals so you have to replace them ever 10k miles. Congrats man, your off to a great start.

Personally what I would do to my car is the following:
K&N typhoon intake (I have it, I like the sound and its by K&N which to me is a plus, good name recognition)
Rotary Performance Fast Cat high flow catalytic converter (so I could still pass emissions)
Borla cat-back exhaust (not the most powerful exhaust out there, but I like the sound and look of it)
Unorthodox pulleys
Racing Beat fly wheel
and a Racing Beat ECU Reflash
Don't bother with looking for aftermarket headers. There are some in Japan, but as previously stated, this part of the exhaust is very well optimised. Max gains I've heard of were 4hp.