My 1958 1 ton has different engine (of course), same granny 4 speed, 5.13 gears, 8-19.5's (and these tires are a very desirable option by the way).
People see those big tires and think it's bigger. It's not, just a heck of a stout 1 ton. I don't know if that engine is stock for the GMC or not. Ask the 6066 GMC Guy. However, the 5.13 gear IS indicative that it is a 1 ton.
