Here are some pictures of Phase II of my loader build (Phase I was upgraded front spindles). I modeled this weight box off the original Johnson Loader Weight Box. I believe mine is a bit more robust and slightly larger (I cannot confirm since I have never seen in person the Johson Loader version). I used 3/8" x 2-1/2" for the supports and 1/8" plate for the box material. It is 14" cubed so it should hold some considerable weight. Please let me know what you think or if you have any questions. As before, I can provide a print if anyone is interested.