Guy is asking $1000. 1979 1 ton P/U 4x4 longbed 411 gears - not a dually: Is this a K30? What axles did this come with? Guy says 10 bolt and 14BFF. (Shouldn't this be a D60?) Is this a good donor truck for axles, etc? I have a 79 Blazer 10/12 bolts.