I haven’t seen any comparisons of the different exhaust systems for a new Cobra. I hear a lot about the Bassani system with cats. Are there any challengers out there? How about their mid-length headers, how much power increase is there over stock headers (if you go with the Bassani cat pipe back)? I’m going to yank the stock exhaust but not sure if I should mess with the headers or not. I’d love to see some before and after charts. Thanks.