No junkyard around these parts so I made one from pieces I bought at Home Depot (think they come in 18x24 sheets for around $18...dont remember exactly). No welding needed. Got two pieces, a couple of heavy duty nuts, bolts, and washers (can use heavy duty wire) and bent the hell out of them to fit (had the help of a heavy duty vise). Then used the bolts to secure the bends.
If dont want to do that, just look in the phonebook for a cimpany/outfit that works with metal. Describe what you want, take them pictures, and they will make you one more likely than not.