a big bit of advice when checking if stuff is even on your truck make sure its on a flat surface
I put my new led light bar on and of course my driveways a bit odd. it turned out **** eyed some lol and yes I did measure it out however i forgot to measure out from the bumper valance soo next time i will.
theres 4 bolts on the back end of the bumper. if its not rot thats causing it to sag you can adjust either the big 4 or the little 4 to get it just right for you.