I think he's talking about rack & pinion steering mounted to the axle. Yes, it's been done. No, it isn't a good idea! By the time a big, heavy enough rack is acquired to be safe and reliable with the front end weight of a pickup with V-8, the unsprung weight is too much, the sliding coupler you have to fabricate for the steering shaft is downright dangerous, and the whole thing is butt-ugly. Other than that, go for it!
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!