Attaching the tow bar to the car with the 6 bolts is not the question - the questions are how the other two metal bars attach, and how the bumper attaches over the tow bar. Looking at other sites, it appears some hitches have brackets on the ends of the tow bar for the bumper "skin" to attach to, and the tow bar replaces the reinforcement that's usually in the bumper. I have what's pictured above (and the two thinner bars are not attached in any way to the bigger tow bar) - are there brackets missing? I don't even see where to attach them.

EDIT: My bad - he figured out the 2 smaller bars which provide an additional attachment point for the hitch apparently. So now the question is simply how the bumper attaches to this tow bar, and if there are missing bracket pieces.