I just installed one of Frank Nye's awesome Outlaw high exhaust systems and it is phenomenal. I have more power everywhere, especially from mid on up to the top.
If you are looking for a beautifully and expertly crafted exhaust system this is what you need and want. Al stainless steel construction and 1.8 pounds lighter than the stock system. Huge 1.375" mid pipe and true Reverse Megaphone design with SuperTrapp end package.
It is 96 dB legal and fully spark arrested and has a very mellow sound.
Frank is a genius and a wizard.