Hi Scott, the hitch is mounted to the rear bumper and then extends forward under the main engine and rear suspension cradle, so it has multiple tie in points for both pull strength. It then has a second bar under the first also tied forward to the frame and providing some degree of lift support. I then made pre-tensioned bars that ran each side of the motor from the upper rear end cradle to the bumper. I loosen them during normal running then add a few turns of pretension when I hook up the trailer. The hitch is a home made 5th wheel and also has 1000lb load compensating bars. I will try to attach a picture it will show it better than I can describe it.
I couldn't find any pictures of the bars, and have them taken off now getting ready to do the repower.
I can send high resolution pictures to your email if theye are of any use.
Cheers,
Dave