The 9' box says to me that it's a 1-ton, model 3800. Not common at all, but not rare just yet. Don't buy it if you want a hot rod, because they're heavier by far than a 1/2 ton, and not as desirable. However. If you're thinking of a restoration or a truck for heavy work, well.. I sure like mine. Be advised that you might fing the original 5.14 diff ratio. With mine, I had a best cruising speed of 35 - 40mph, and a flat-out maximum of maybe 50 mph with the old 7.00x17" wheels. I've since swapped to 235/85x16" radials (same profile) and a 4.10 ratio, and I am happy.
