bought a b-series comptech header off ebay for a good price and now im forced to upgrade my exhaust from stock. looking into a 2.25" from header back. my questions are should i get a cat and resonator put in? lookin for the optimal power gain without sounding like a buzz bomb. as far as mufflers go im pretty open to suggestions. looking into buying the es oval and puttin a decent but stock looking tip on it.