If it's really a 1-ton, it will have extended front hubs, via a bolt-on piece outboard of the brake drum. I believe the dually 3/4 ton had a different setup for front brakes.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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