Imo looks best non-painted or whatever finish is on the ground effects spoilers.Forgive me if this has already been posted....but what do you all think?
I messaged the seller and they stated it will fit the base bumper.
https://www.ebay.com/itm/R-Tech-Rear-Bumper-Diffuser-Lower-Valance-Lip-Body-kit-For-2015-18-Ford-Mustang/332573636542?fits=Year%3A2015%7CMake%3AFord%7CModel%3AMustang%7CSubmodel%3AEcoBoost%7CEngine+-+Liter_Display%3A2.3L%7CTrim%3AEcoBoost+Coupe+2-Door%7CEngine%3A2.3L+2300CC+140Cu.+In.+l4+GAS+DOHC+Turbocharged&epid=7015899898&hash=item4d6eeef7be:g:2vIAAOSwvv1amhDI&vxp=mtr
Revisiting this, if you look at the pics, it shows a premium bumper because of the thin black valence that goes down behind the rear wheel. Again, I would be VERY WARY of someone who claims that fits both base and premium. I ended up getting a premium bumper cover from ebay for $310 shipped, a valence for $136, and the Ikon diffuser for$102. I did this because I just don't trust tape for large pieces that get heavy airflow...now if bolted up, I have no issue. So if the one @Nagare speaks of does that, then I believe that to be a decent option as opposed to full conversion.