The Dealership Knew nothing about what was done to it they said when it got delivered it was lowered had those 20's on it...The dude who sold me it told me it had bigger fuel injectors but I haven't really checked it out myself I was like "V8 I want" But other than that Its stock exhaust...One of these days Imma Dyno it. Oh and the dealership painted the Hood,Top,and Trunk Black!