[lockdoc]

I think the answer you seek (if you asked Gulfstream) is no. Adding anything other than what the rv was designed for will void your warranty from frame and wall damage. That being said.....I added a hitch to my fiver to pull a small trailer but I am not adding a lot of tongue weight either. I have pulled like that over 1000 miles and have not seen any problems yet. I do not take rough roads in this configuration though so that I can minimize the chance of any bouncing causing added stress to the rear of the fiver.

To add the hitch we tied into the framework going forward to the axles for strength.

Good luck with your decision.