hey man in my opinion its not worth it. i agree with solid jake get the adjustable suspension and if you do want an intake go with the cosmos racing or something. Suspension was the best thing i have ever dont to my car. and that is from a guy who has a carbon fiber dinan CAI on his car (only because i got it for the same price as a cosmos).
2003 m3 6spd - Silver Grey Metallic - Current
2004 325i 5spd - Grey Green Sold