For a couple a grand could just get another one also...A trailer company could redo it for you for a couple grand I would think. I worked at my uncles welding shop as a kid (14-16) and we did all kinds of retrofits and rebuild/repairs. Contact one and see what they say, also.. they could give you the skinny on what you actually have. Good luck Wolf :thumbsup:
The axles are usually 2000#, 3500#, 5200#, 6000# etc, look at the metal tag around the front of the trailer to see what is.