Many of what was mentioned above will help
Y Pipe and tuner will help the greatest
Y pipe as the stock one is simply sad and tuner, simply because you can run a tune that fits your budget, but you will increase efficiency
TB will help too.
Either way.....we can help you with all of these and can offer you a bundle pricing or multiple phase pricing
We got the Y Pipe, muffler, TB, Tuner, Catback kit, you name it...
Either way, let me know
Send me a PM or email to my username (plus the dot com)