Dont believe the description. It says 409 stainless steel. Well the only thing that is stainless is the pipe going into the muffler. Even the outside is tin. And as for thsound, it sounds good but, has a spot at mid range that makes your head throb. I dont think you will be happy with this exhaust.
MBRP Dual exit exhaust
I purchased the Dual Exit exhaust mostly for appearance and hope for a better deeper sound. Since I have yet to do an EGR delete on my 6.4 Power Stroke the tone of the exhaust did not change much. Once I do delete the EGR, I am sure I will get the sound and performance I'm looking for. For now, I like the appearance and got a couple more MPG too.