Jetboy 47, I recently acquired a FT4Z-581178-C and have a 2024 ST. A big Thank You to rafeeki for selling me his extra one!
I have not yet installed it, but from my measurements and visual observation, it will work. The screw holes and light plug cut out match up.
I may have to do some slight modification to the center area around the hitch, but it is plastic and can be cut out very easily. I am planning an install soon and will post my results.
If you can get either one (-C or -D) I believe the D would be the exact fit and no modification would be needed.
But since they no longer exist, get whichever one you can at this point.
I was just at my local ford dealership and there were 2 2024's on the floor. Both of them were missing this part.
Shame on Ford for doing this to a brand-new vehicle.