glamis4X4,
Welcome to the Stovebolt. What a great looking truck..it looks like a desert dry, rust free dude!. I don't know the dimensions of your rig, but someone that does will probably be along shortly.
I have enclosed a link Fleming Metal in Los Angeles. They stamp parts for flatbeds..side rails, end rails, even neat "period" round corners. With these items, you could build a new bed that would fit the truck. Take a peek, it's surprisingly inexpensive, and they are close by.
http://www.flemingmetal.com/ Stuart
