I bought this from summit for 110$ 2 weeks ago to place on my 2012 silverado however wound up buying a total corsa exhaust so I do not need this. The case is 14" with 2.5" inlet/outlet and if u go on youtube u can see what it sounds like or would seem like on ur automobile or truck there on basically every automobile or truck on there and they sound badass, any? s let me know. Im company on my price which implies (I WILL NOT TAKE LESS !!!!) trigger its im but brand-new not summit so it cheaper than getting it from the shop. I don't imply to be candid however some individuals have no idea what (FIRM) indicates THANKS !!!!!! my # is in the picture sec and also have a set of new flowmaster stainless tailpipes on here too.