The WeatherTech FloorLiner DigitalFit accurately and completely lines the interior carpet giving absolute interior protection. Digital laser measurements of interior surfaces offer a consistently perfect fit. A patent pending HighDensity TriExtruded (HDTE) material allows for a rigid core for strength while offering surface friction to the carpet, as well as tactile feel to the surface.
WeatherTech 443021 FloorLiner
Here is what I did to my door panels - The Mustang Source - Ford Mustang Forums
2010-2014 Ford Mustang Door Panel Insert - Coverlay 12-14LL-BLK -
Custom door insert covers - no visible thread for Mustang - 2010-14 cars only. NOT GENERIC! FITS GREAT unlike those universal Chinese ones that never
RedlineGoods Door Insert Covers - no Visible Thread Compatible with Ford Mustang 2010-14. Tailor Made - not Universal. Genuine top-Grade Italian Black
PIT66 Coverlay Door Panel Insert Fit for 2010-2014 Ford Mustang Smooth
2011-2014 Ford Mustang GT Boss 302 S197 Pair Door Panels Driver Passen
Fit For 2010 2011 2012 2013 2014 Ford Mustang Door Panel Insert Pleated Black US
G-PLUS Door Panel Insert 2012-2014LL-BLK Compatible with 2010-2014 Ford Mustang Pleated New! : Automotive
PIT66 Coverlay Door Panel Insert Fit for 2010-2014 Ford Mustang Smooth
Door Panels for 2014 Ford Mustang for sale
Door Panels for 2011 Ford Mustang for sale