Dynomax race bullets on street

7dart0 said
are those inserts something you made or is it off the shelf?

Bought both , mufflers and inserts from speedway, try their website. They have probly gone up a little in price since I built mine, I don`t think I`ve got a $100 in the whole thing. THE 3 1/2" PIPE WAS THE MOST EXPENSIVE . 2 3FT PIECES.