I ended up getting the upf disc brakes from pacific trailers (http://www.pacifictrailers.com/) for a great price. Thanks all for the help. Now I'm working on the wiring of the lights. Some issues, but I will work through them. Searching for a wiring diagram now for the 1994 maristar trailer (or comparable). If anyone has it, please pass along. Again, thanks to those who helped me out.