If your plans were for the Dr. Gas X pipe, GET IT! It is the best sounding midpipe/Flowmaster combo I have ever heard on a GT. And the rasp you are hearing about is mostly due to the mufflers. Chambered mufflers like Flowmaster tend to have a metallic raspy tone to them since there is no packing - especially when paired with an O/R pipe. You will have to weld the Dr. Gas though. All in all, Dr. Gas

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