hi need some help on picking a back box for my non turbo impreza sport can i put any one straight on also dont want it to wake up the street but would like a bit of a grunt when i put my foot down a couple of bhp would not go a miss aswell. its a 2003 2.ol gx sport thanks

 

When I had one of those cars I put a haywood & scott on it and it just gave it enough to release the burble a bit more .

And theres a group buy on at the moment

http://bbs.scoobynet.co.uk/showthread.php?t=478368