mine was mocked after a couple of different mufflers but shortened and widened...when you take down the welds that is what you get a soft weld look! you cant go to far down as you don't have much weld to begin with, but mine has a 3 inch inlet and not 2.5 and my outlet is 4 inch vs the online 3.5. the length is 18.5 inches end to end and measures 11.25 width...I guess I could have been a little more original but I liked it and so I made it my own in the size that we need....and the wall or body case is at .030 within my own custom preforated piping inside that I built 100%, I get my tips supplied by True performance...I get my packing fibers from the same company that yoshimura does....all my bracket material which is mounting the two pipe together is bought from Fr sport pre made in santa ana ca. This is 2 of three I have made....welds all have been done by me. Chrome over stainless done by south bay chrome, and the polished one on my car is done by the same....all my stainless sheet metal is bought through Precision Metals Los Angeles and pipe from Premier Metals in buena park. My welding supplies harbor freight! Either way if I forgot something let me know and will answer.