Looking to buy a used Dinan or Akra catback exhaust for E92 Fitment. Also willing to trade basically brand new custom valved exhaust, either straight trade for dinan, or + cash for akra. The valved exhaust I have is great, but its quiet when closed, and extreme when open. So - I'm looking for something more in the middle. For sound comparison, the valves closed sound stock, open sound similar to gintani race or Meistershaft GT2