03 Lancer OZ Header/perform chip?

I need some info. Does anybody know where I can get a decent performance chip for my 03 OZ? Also, anything about a Kamikaze header...will it connect to a magnaflow Cat exhaust...what kind of gain can I expect to the wheels...ect. If one more person tells me to buy an Evo I'm gonna lose it! I can't afford an Evo. Every car has its place, even if you have a 500hp STI, there's always something better in another class. I love my OZ...Its fun to drive. Thanks I'll get off the old soapbox now