Is the Borla XR1 40085 muffler 3in core?
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Is the Borla XR1 40085 muffler 3in core?
I just noticed that the magnaflow 14419 muffler to go in the I pipe is a 2.5in core. Is the XR1 a 3in core? Also does anyone know about the flow pro twister or moroso spiral flow if they are 3in cores? Any info or pics are VERY appreciated.
Brian
Brian