I have for sale an axleback that clears 13+ GT500 Valance, I bought a universal magnaflow muffler with 4" quad tips to fit the valance. Reason for sale is I had Magnaflow Comps before these and these were quiet for my taste after the comps. Parts are as listed below:
Magnaflow 11236 Satin Stainless Steel 2.5" Offset Oval Muffler : Amazon.com : Automotive
Mustang Quad 4 Inch Exhaust Tips 2013 GT/V6
$285 SHIPPED, PM FOR MORE INFO
Magnaflow 11236 Satin Stainless Steel 2.5" Offset Oval Muffler : Amazon.com : Automotive
Mustang Quad 4 Inch Exhaust Tips 2013 GT/V6
$285 SHIPPED, PM FOR MORE INFO