Looking for recommendations for exhaust system (cat-back). Something that will allow me to upgrade Y-pipe from stock at a later point but allows for increased flow. I am a 99 Cali-spec. I definitely need to replace the damned muffler, though- it is pretty much rusted through. A bump in power and a deep, throaty sound are a must.

 

If you have the money;GReddy EVO (hafta custom fit it) or GReddy SP. If you're strapped for money,go with a custom cat-back at a local muffler shop with a magnaflow muffler.