I hate to rain on ol’ Barry’s parade, but if your “California truck” looks like it just finished hauling the Joad family and all their belongings back to Oklahoma, no amount of “rare options” or (non-original, I might add) big block engines are going to make it worth $6500. The price gets even more ridiculous when you notice the three different shades of primer, plywood bed sides, “Indian blanket” seat cover, and massive amounts of rust. Even Mater himself wouldn’t pay that much for this heap.
That said, this thing will likely run until armageddon, and might be more solid than it looks. These trucks come from an era when trucks were utilitarian vehicles – not a cupholder or padded armrest to be found – but would make a great work truck, parts hauler, or even a budget hotrod for about 1/4 the price.