I bought the mudflap hangers from a truck accessory shop, for I believe 150, then the mudflaps were 14 bucks for the pair. I work at a machine shop with a waterjet so I made the Texas Heatwave design on our waterjet machine.. cut down the mudflap so it's proportioned to my truck. bolted the mudflap hangers directly to my trailer hitch receiver, just took it off and drilled the mounting holes in each side and mounted it back to the truck then, added the mudflap brackets, I used wachers for shims so each side would be even and strait .. Make sure you get spring loaded mudflap hangers and place the flaps far enough away from the tires, I used to hate braking brackets everytime I ran over them in reverse against a curb ..
Basically, bolt the brackets to triangle part on the side of the hitch receiver and connect flaps to that. This is best way I came up with of doing it and keeping them far enough away from the tire but not all the way to the back of my truck.. if you need a logo made out of Stainless for them hit me up I should be able to set you up with something to put on them..