Looking for Exhaust

I'm looking for an exhaust for my 97 Legacy GT Sedan that will increase power and NOT be too loud. I'm thinking of the Prodrive Legacy Saloon Muffler.
http://www.prodrive-usa.com/product_detail.asp?yid=198&cid=5&pid=12&s=

Think it is a good idea? Do you know where they sell that? I can't seem to find it.

Thanks

I have the SPT exhaust made by brospeed.... Pretty quiet but better power over stock.


http://www.spt.subaru.com/microsites/spt/main.jsp

i bough ta cherrybomb turbo exhaust from auto zone, gave me a good sound, not to loud but a good sound nonetheless, it was wicked cheeap too cost me 40$ with all the parts/pipes hanger etc. all i needed to do then was choose a tip for it, looks and sounds nice and my car is a bit more powerful with it too.