Problems after some front end work

[pete57]

Not having good luck here. '64 c10, what ive done ECE disk brake swap with drop spindles & 1.5in drop springs, went ahead and changed upper & lower ball joints while it was apart. My problems, loud squeeling when going down the road, when turning both ways it feels like the wheel/tire is flopping around . Breaks work good. Jacked it up & removed wheels twice and everything looks ok. Tried shaking wheels while it was on jack stands, everything feels tight. Wheels spin free while jacked up, not dragging. Any ideas what to look for next? Im all out of ideas.. Thanks