Call the folks up and ask them to tell you the mesurements and then you got 2 wks start on what you will start with.
You probably will need new wheels and or bearings. I got one and ground off all the old paint drove my neighbors crazy. up a dawn grinding away they never said it to my face but I could see it in there faces

!!
a new hitch and safty chains worth a trip to you nearest RV or auto or boat store, Kmart, wally mart, etc. and the net there are great lists of net sites on this forum.
Ron D.