I've had in my hands, the k&n, the cosworth and the steeda. The first one I got was the steeda without the chrome thingy, it basically is an aluminum tube with the maf housing; it felt really strong but I always had in mind a CAI. Then I got the K&N, huge improvement in performance and sound, sinlge piece easy to install. It is made of hard plastic and you don't need to reuse the stock maf housing. Personally the best choice. Then I got the cosworth for a couple of days. No notorious performance improvements over the k&n, sound was lil bit different but my exhaust covered it. decided to go back to the K&N, which in my opinion is more user friendly and with a more durable and stock construction.
If you guys are looking for an intake like the costworth, send me a pm and we will have no problems making them. Quality is our top concern with every product we make. Please keep in mind that a 3" intake will need a tune adjustment. We can also a 3" intake that necks down to the stock ID simialar to the K&N but just a little larger. A velocity stack at the filter is also an option.