IF you have the money I would go for a superprint exhaust as they are good build quality and sound good too. Not over the top just a nice burrble. Or a Miltek system is also supposed to be very good as well. Most people go for either a BMC CDA or a RamAir induction kit. As to which one is better it depends on whether you run a cold air feed, looks, noise and cost. You wont get a bigger throttle body for yours as yours should be a later OBD2 spec car, which already has the bigger throttle body and different management. Stealth is based in warwickshire and AMD is in Bicester IIRC. Depends wha