Recently bought an '02 1500 Crew Cab ST, previous owner had had a tommy gate on it and moved it to his new truck. Fortunately he gave us the bumper along with the truck, but unfortunately no hardware for it.

What am I missing, just bolts, or also some sort of mounts? Part numbers, by chance?

Just got it to pass smog (couple o2 sensors and all new ignition coils did the trick), so it's time to get it looking a little nicer as well as install a hitch.

Pics of the bumper and back of the truck to see what it is I'm missing:

https://imgur.com/a/Myand