Glasspacks as a whole come in many generic forms. There really is nothing to them at all. My model is called a cherry bomb. They used to be painted red in the 50-70's but can be bare metal as mine is. Sound clips will be a tough one but i may try this weekend if time permits. I think the 3" pipe from the muffler to the rear is really making a big difference on the deeper tone as well but I have never heard a 2.5" exit pipe from a glasspack on the X so take that for what it is worth.