The Chevy with the drivers side drop is an IFS system, not very adaptable to the older chassis as much of the suspension geometry is built into the integral to the frame mounting.
The Jeep J 20 stopped production in '87, IH stopped in '75, both would be somewhat difficult to find, and in the case of the IH, expensive due to the rarity.
However,
here is the company that makes the parts to convert any axle into a steer axle, Crane Hi Clearance. The kit uses a kingpin style knuckle, just like the HD Dana 60 front axle used in the '77-'91 K30 Chevy.
