Thx for the comments, this is not my first rodeo so I understand the differences between OE and aftermarket bushings , how they work, how to install and maintain them , I have been turning wrenches for more than half a century.
When I was reinstalling the rebuild suspension I noticed the different nut and thread on one of the strut rods and initially did not give it a lot of though. I did a rough alignment adjusted the ride height , test fitted my sway bar etc. Stood back and took a good look thinking about the strut rods. I decided to check the fender to tire clearance (front side) there was close to an inch difference side to side. So now I get out the tape measure and measure the strut rods, sure enough there is about 3/8" difference from side to side. up until that time I never knew there was a change but asked a mopar parts guy about the change . He knew about the change somewhere around '74 but was not aware of the length difference. He simply said fine thread or coarse thread.
Anyway the later one is shorter than pre '73 (between the stops) which makes sense given '72 bnb's comments regarding the bar change in '73. On my car on that side, the strut pulled the LCA forward noticably. So I looked at the pivot bushings side to side and sure enough on that side the LCA had been pulled back a 1/4" or so.
My conclusions, after considering the feed back so far. I don't buy the strut rod holding the LCA pivot bush together, I agree with 413's comments. Seems this is proven by the fact that pulling the LCA forward pulled the inboard end of the LCA back without ever driving the car. As far as that not affecting the alignment I can't see that tow and camber are not affected by moving the indoard end that much! The strut rods are a fixed length for a reason, the rubber is there simply to cushion loading and absorb the road for a more compliant feel.
Hope someone else will weigh-in and provide some other alternative to this issue. Right now I am still back to OE.
