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Searching today I found that Borla makes the XR-1 in a 3 inch inlet and outlet configuration with a 12 inch length body, 4 1/2" x 7 7/8" configuration. I think this will be my new muffler for the NX. Plenty of room to have some fabrication space with the 3 inch VRS setup that is currently with the car. I think that this muffler and some type of resonator/cat assembly will really sound good on the NX. Anyone have any experience with these mufflers?