To make the steering effort easier for your wife till you decide whether to go IFS why not use a power assist ram? By FAR the easiest to install, has a good feel, and was used on many 4wd trucks, Chevy cars through 1964, Corvettes till the 80's, Mustangs till 1970, and construction/farm equipment yet today. No steering geometry problems because you change NOTHING. The ram bolts to a bracket on the frame on one end and the tie rod on the other. The control valve goes on the end of the draglink and that's it. Pitman arm, draglink, and tie rod are unchanged from factory geometry.
