Started out with a GReddy Supreme catback I found on THMotorsport for $675 and free shipping. (Use code "greddy" if interested https://thmotorsports.com/greddy/gre...i-2018595.aspx). Not doing this for power but to give the car a bit more character and sound, the power is an added benefit.
Should also mention, I just bought the exhaust today, 14 March. Should be here within a week or so, apparently coming from GReddy themselves.
*edited to include photo from GReddy of the exhaust*