Check the idler arm first, if it is oaky look at the upper and lower ball joints and then the all the bushing and finally check the preload adjustment on the steering box twocents scope
A little wear here, a little slop some where else and pretty soon you have a loose front end shruggy scope
What year and body style is it?

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)