Diagnosing a front end wiggle at 35mph

Ok, just to bevclearvi say "shakedown" I mean do the checks, not necessarily "shake " things. But yes, you'd unload the torsion bar tension and see if ball joints have radial and axial play. Basically side to side and up and down, then tie rods, idler arm, Pittman arm, wheel bearings, strut rods and bushings, then as said tires,wheels, basically every possible thing, run over it with a fine toothedccomb as they say