Take lots of pics to use as a reference if it helps. I have a file for each area to refer back to. Keep at it man!
Easier access to the bumper cover if you remove the headlight assys. first.:huh:Trying to remove the front bumper cover but it isn't going too good. I am loosening up lots of bolts but nothing seems to be getting loose. I removed the lower valance panel first and broke off about 4 of the bolts. Doesn't look too bad because it looks like I can just drill out the rivets that hold the steel reinforcements to the fender and replace them. As far as the front cover itself it looks like there is a bunch of screws coming through from under the cover so that is what is giving me trouble. The parts diagrams show what I think is reinforcements like those found on the rear bumper with nuts holding the cover on but I don't seem to be able to feel the nuts on there. They are either rusted into something that is no longer resembling a nut or there was some more mickey mouse work by a prior owner. Also getting access to those nuts up near the top isn't going to be too easy.
I am no expert by no means. I only did my own frame off on my '74. I had no rust on the frame that had to be fixed, but both rear mounts on the body had to be replaced. On my car some of the shims had turned almost to dust so I almost had to start from scratch like you are.So far I haven't seen a shim anywhere on the body mounts. The #4 on the right side has none and the #1 on the same side also doesn't look like it has any. As soon as I get access to the #2 and #3 I'll see if there are any shims at all. I tend to believe that this things has been off the frame in the past and the dimwit who did the work figured that a shim was a waste of time or something. How do I know how many shims to use if there are none to replicate?