Interesting Jeff. My experience is the exact opposite. I can't recall seeing an unrestored Dearborn car that didn't have alignment shims under the front of the fender. My August 64 coupe and both June 65 cars have them , though the right one on my convertible was removed and is wedged between the grill and radiator support.
Yes interesting. Or course we're comparing 65 verse 66 and Dearborn verses San Jose for the OP's focus
I'm guessing (you can confirm) that your describing the shims being found only under the two front bolts at the inner fender and radiator support locations looking at the pictures I have of the cars. Not all or any at the other locations
Three pictures from Mikes green car
No apparent shims
One at the front bolt location
And from another 65 Dearborn example we have in the unrestored picture section. We even included a comment on them when those pictures were posted a few years back
Took a very quick peek at 66 Dearborn and found a number of cars with a shim on one side or both. Right now is appears allot more popular for cars built at Dearborn
Might be a good discussion in another thread focusing on other years and all plants