Went through this process myself and ended up pulling the trigger on the Diode Dynamics stuff. I'll have switchback front signals for sale in a few weeks when I switch my turn signal lenses/bulbs. If you don't mind waiting of course.
Also, the bumper is against my passenger headlight and there's a big gap on the driver's side. Again, they're saying you can't adjust it. Really? 2017 Mustang and you can't adjust anything to fit properly?
Was this ever sorted out? My front bumper isn't aligned at all and in fact keeps breaking the side bumper tabs where it joins the fender because of the misalignment. I've been told there's no way to adjust it either. Body shop at Heritage Ford in Scarborough are saying this.
I'm thinking of putting headers and cai on my '17 GT but worried about what the dealer will say once I tune the car with an SCT.. will it void anything? Would they refuse my warranty for any parts needing replaced if I do tune it?