A body suspension feel???

Professor Fate said
When all is correct, these cars actually drive pretty nice.
That said, they're fifty years old now... First and foremost, make sure everything is in good condition: ball joints, tie rod ends, control arm bushings, idler and pitman arms, strut rod bushings... you get the idea.
Next is your alignment. Slant 6 cars with 78 series bias ply tires aren't set up the same as what you need for modern, possibly substantially wider radial tires- this opens up a whole host of weird tracking issues among other things. Go to a good alignment shop and follow the SKOSH chart on this site.
Following the SKOSH chart - your experiences? | For A Bodies Only Mopar Forum
Next, do you have power steering? Chrysler tended to over pump their steering, sometimes making them feel "light" and "floaty". This gets amplified in the light A bodies. The solution? Dial down the assist: Pump It Down....EASY | For A Bodies Only Mopar Forum
Once you're done with all the above, you'll be shocked at the difference just "optimizing" what you have makes.

Great post. Thank you.
Yep I have either replaced or checked all the front steering and suspension and all parts are good.

Yes, I have power steering an you nailed it. It feels light and floaty...EXACTLY! I have modified GM PS pumps for Ford mustang rack and pinions before so I am familiar with this. Thank you for the link to that. I didn't want to lead the discussion down any one path but you hit it. At 65 mph I was deathly afraid of bumping the wheel for fear of putting myself into a James Rockford maneuver.

And I do need to re-check the alignment. I did an alignment using the SKOSH chart during the rebuild however...because my tires are so tall you can't get your hands between the tires and fender to make adjustments. So I kind of faked it by hanging several buckets of water off the bumper brackets to simulate the sheetmetal weight. It's probably all wrong. It's funny cause I can still remember adjusting the eccentrics on my first Demon back in high school and I'm pretty sure I could see everything over the tire.
Jerry