trailer hitch for a early dart

I had a dealer installed hitch like the one above on my 66 dart when I bought it. Mine bolted to the bottom of the spare tire holder . I put a metal plate in the bottom of the tire carrier holder to male it stronger. I pulled my drag bike/trailer for I guess three with no problem. Ive got a parts car a 65 dart that has a stronger hitch. Ill try to get a picture and post it on here. I think it bolts to the frame. Ill check it out and get a photo on here if I can. Ill go look at it now.