I am very familiar with that area. We run down K15 a lot to miss the scales at Belville, KS, and there are a lot of old farm trucks still sitting in barns in that area. Conventional cab 2 tons usually go for $1000 or so. Cabovers bring a little more from people who want to put the cab on a later model frame, but not that much more. It probably has the RH5° wheels, a 248, , a vacuum 2 speed. A 400 series is a lot more interesting like Spanky says: Bigger truck, 270, electric 2 speed, safer wheels and possibly even air brakes.