I will just repost this. The rear of the truck have no problem with I've seen it done and and all its doing is to hold the box mainly. But to the hitch here is the rules
8.Hook point must be no closer than 44” of center line of rear axle, hitch height maximum of 26”, with a minimum of a 3.75” X 3.0” opening. Hitch point must be easily accessed. No “trick” type hitches permitted. Hitch must be stationary in all directions. Hitch must be frame mounted. Hitch must be mounted center line of rear axle or behind. Hitch must not exceed a maximum of 25° angle from pivot point to hook point. No hitch supports or adjusters, if fastened to the rear axle housing shall be above the center line ofm rear axle. Pivot pin of drawbar can be no farther forward than center line of the rear axle.
I'm on my phone so hard to make the part bold but the part that says the "hitch must be mounted center of rear axle or behind" so to me those bars that go forward that support the hitch are illegal.