so far i only have a CAI on my 04 neon r/t magnum. i plan on upsizing the exhaust from the stock (2.25) to a 2.5". using a custom catback exhaust, ran to a single, not so straight pipe, with a 3" outlet. after putting the exhaust on, would you recommend a 55 or 60mm TB? from what ive read the magnum has a better intake manifold, along with a couple other parts. these are the only mods i plan on doing to the car, besides a comp 400 cam with titanium valve springs. but am still debating on putting a new throttle body on after the exhaust. any ideas would be greatly appreciated.