well, its all true. Rusty uses AEROS on his NASCAR Cup and Busche series cars only when they race in Monterrey Mexico due to noise restrictions at that track. He also uses them in the Elite series cars that he biulds and runs. He is also retrofitting them on al of his trucks, RV's and Semi's/ Rusty said all of this on his last Two guys garage segment on Speed TV.
I posted it to you from a 3rd party to show that some racing teams use AERO. Rusty did not use the muffler when he raced. But he is a spokemen for the company and does own shares in the outfit. Check the link I put at the bottom of the first post I sent to you. Sorry for the confusion Red