Greetings Bork! Looks like you've been away for a while so I hope this reaches you. Your name came up in a search for frame extension. I have an 08 Thomas/Freightliner C2 and would like to add a 4' porch to the rear. My plan is to tow my car with a wheel dolly so it would have to be very sturdy for the hitch to mount to. And assistance or guidance would be greatly appreciated. Bradley