Have a 07 Mustang v6 and want alittle bit louder exhaust. Not ready to go duel yet. Right now it has a cold air intake, 70mm throttle body, and magnaflow muffler. I love the sound of it now, just want it to be alittle louder. What would be the effects of cutting out the cats vs getting some high flows. (Ohio has no emissions checks anymore) Also what would the effect of new shorty headers do? Thanks.