Virtually anything can be accomplished with enough money and access to a skilled machinist. You would probably need to find spindles with a slightly oversized kingpin and bore the axle to fit. Then it would be a matter of fabricating steering linkage to make the new spindles and the steering gear cooperate with each other.
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!