Hi, I'd like to liven up the exhaust note on the QP5V I've had for 5 years. Thinking about either sourcing some used Larini back boxes (or Tubis etc) or perhaps getting some back boxes custom made (perhaps even valved..). The Sport GT already has the X pipe. Not going to pay Larini's new prices though (overcapitalisation), so wondered whether there are any around or what others have done? Cheers.