The turbo muffler is all about the inner workings. Like the same mufflers that come with the Dynomax system.
http://www.3800performance.com/Merch...roduct_Count=5

 

when i got the one muffler put on for now i scored it with some sand paper then coated it with high temp paint but i scored it between coats to make sure the paint will hold. then i coated it with some high temp clear i found at a hobby shop ironically i found some more at a paint supply shop that opened two months after i put on the flowmaster. painting it helped at where the welds are as well do to the salt and what ever likes to stik it self and cause rust. plus it is easyer to clean it when you detail the car to get the dirt off of it as well.