JCON

Twinturbo with heads and cams and a shot of nitrous.

Or swap a larger engine in. You are going to have to be more specific than you are.

Also, search the forums, your question literally gets asked every week.

TTANG10

On my 2009 V-6 I had a custom H pipe into two round turbos and out the back with 4 inch chrome tips. I cut the bumper out with my dremel and it looked and sounded awesome. It had a deep sound with no crackle at all. At interstate speeds like around 80-85 there was some drone but not too bad and it all only cost me 206 bucks. The car was rearended by an F350 two weeks from the day the exhaust was installed, I only had the car a month. Now I just bought a 2010 and I'm going to go with the same thing except with GT mufflers because my wife likes quiet.

raimjob2@hotmail.com

I bought two gt500 exhausts for 23 dollars; right know I have only one installed; the difference is not great but at least it sounds deeper specially at low rpms and at idle when the car is cold. I wonder were can I get the rest of the set up cheap; since I already have the exhaust?
check on youtube there is a guy with gt500 take offs and headers and it sounds very nice; it is not raspy at all but deeper.