These mufflers are Husky brand,made from stainless steel & fully tig welded. We are a exhaust shop & have been using these on a variety of performance applications including rotaries & turbo v8 without a problem & the sound is very deep & throaty. They come in various sizes & configurations but this listing is for a 3 1/2” pipe size with a barrel size of 16” x 9”x5”. These are a great quality part. – Not cheap chinese crap! FREE DELIVERY….