Yes, there was a single-wheel option for some 1 ton trucks, and even one of the Suburban models could be ordered with 1 ton suspension. You've probably got 18" wheels, right? The rear brake drums are big enough that 16" wheels won't clear the drums- - - -been there done that, with my 3800 dually flatbed.
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!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!