Steering All Over the Place at 55mph+

The key is when you get your new alignment, insist on getting as much positive caster as the tech can get. With stock components that may only be 1-1.5 degrees but that'll make a huge difference. Do not have them go by the factory specs. With good solid parts, you'll have a good driver!

You might be able to eyeball the thin LCA bushings. If you see ANY visible cracking, don't go any further before replacing.

Another thing, don't final tighten the fasteners until the weight of the car is on the tires. I put the tires on ramps or big chunks of wood.

My own personal experience is the 64 Valiant drives very well with radials. I drive 320 miles to Carlisle each way and it's great.

The 68 cuda tracks like a freight train with the upper offset Moog bushings. (Only 1.75*) I can take my hands off the wheel at any speed and both are completely stable.