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And Billy Boat us right up the freeway by Deer Valley airport. Just got mine and will be putting them on tomorrow. They are VERY well built, can't wait to hear what they sound like.
You can modify your current exhaust. Remove the cans, cut them open and seal the perforated pipe inside. Sounds awesome, much louder open and still civil closed. Lots of threads on here discussing it and photos. I have the Z06 version on my car modified and couldn't be happier.
LT Headers, hi-flow cats & 3" X-pipe 3" back to NPPs, w/ NPPs open I assure you it will satisfy you quest for agressive. If thats not enough remove the cats although I strongly recommend against it for more reasons than I have time to list.