1970 chevy spec

[LadyBug]

Sorry guys . I looked on the net. But must not be looking in the right place. Does anyone know the track or width or a 1970 chevy 1-ton dually. I can only find the frame specs. Why am I have so hard of a time finding this. The ones I found on give the frame specs. Like without axles and wheels. I know Chevy made at least 2 rear axles, A wide and a narrow dually. Any one know what the front and rear measurements are. Like to the center or the outside of the stock tire , and wheel. Thanks