Please do post some better pictures, etc. A number of us would like a better box for something like a reasonable price.I can take a few tonight and post.
the one I mounted on my 500 was off of a golf cart.It was 43" wide x 30" long & 8" deep with tail gate.It's about 4" narrower than the 500. It is metal. Look under buggies unlimited.comI will get the pics on here in the morning.