I have an '04 s2000 that needs some go fast parts. There definitly are not a shortage of mods that can be done but most parts are for prior models like '00-'03. I have a friend who owns a '01 s2 and his engine plate reads "f20c1" but mine says "f22c1" on the '04 model. I am aware of the differences such as a lower rev limit and larger liter size, ect. My question is can the parts made for the earlier year s2's work on my f22c1? I am interested in modifying piston rods, piston heads, exaust, ecu, throttle body, headers, ect. I know the cold air intake will mount up but I am reluctant to buy parts unless I know they will work on my car. I have considered buying a spoon throttle body 70.01mm but again I don't know my size throttle body or if spoon's will work on my '04 car. I need to find a website that I can refrence parts for my car. Or if anyone has any helpful answers I appreciate your replies. Any other '04 s2000 owners? Let me know what you have done to yours! Thanks!