Okay I am getting a new exhaust for my '02 3.8L mustang. I am not getting new headers now and I plan on keeping the original cat converters. I know i want 2 flowmaster mufflers, so first off which kind should i purchase? i want a deep sound and nothing ricey so any suggestions on which muffler will help alot. and my next question is my local shop is going to make a question pipe but should i have them cut where the Y is and make it an X pipe or cut the Y off and make straight pipes? Which would be louder/deeper, better gas mileage, and most of all cheapest? all and any input is veryyyyyy much apprieciated.