If you tell Nik what your requirements are, go with his suggestions (or any other workshop you may want opinions from). Basically Nik is trying to sell you the best bang for buck exhaust you can buy, cheap, 3" turbo back, cannon muffler. Allow the new exhaust to get some carbon build up in it and it should sound pretty bloody good. Also, as you have a piggy wrx, there will be alot more sound deading from factory in it, which will keep noise in the cab down a bit. What sounds not quite loud enough to you will sound like a yellow sticker to Mr. Plod
