Ok....got some more info.
I got a hold of Rick Ehrenberg and Ray Costello from CAP Auto products (he engineers/sells the cool dynamic strut rods and all sorts of other suspension parts for our rides).
Rick said " Actually, I though the non-flanged design was earlier, not later. At any rate, they are 100% interchangeable, and any "slop" will totally disappear once installed and loaded."
And Ray told me over the phone that the early ones were like what I have...then the Chrysler enginers decided that the LCA was a wear item and that the added flanges would help slow down the wear so they added it to the heavier cars. He said that a lot of those were replaced back in the day when they were probably just fine. He said that all I need to do is clamp the end together some where the pivot goes thru, and then weld a strap across to tighten up the joint a little (a suggestion autoxcuda made in my "toast" thread for my original bent old one) and with that and the lower plate I am putting on it will be like new....Now, he could have easier said "it is scrap, you need a new one...and by the way, I sell new ones." but didnt so....
Between everything you guys have thrown out there plus this, I gotta believe I am ok.
Big sigh of relief.