Hello all, been reading on the forum for @ 3 months and doing research and the time has come to pull the trigger. With the help of GTDrummer and Shelby Im putting an offer in on a car near south carolina tmrw. The one im interested in is a low mileage white 05 with all the options. The only catch is that the car has a ford cat back exhaust on it for a louder tone. And the original comes with the car as well. Is this something that I should be worried about as a modification and does anyone have one of these. Thanks Dr V