Russ Burns

read your first post, and thought this sentence was describing damage done to the unibody structure.
"Again, they had time to be stressed back, the frame side of the
mounts rotated a bit, and finally the back end of each mount fractured, cracking part way across the mount, but not completely. "

If I miss read the statement then there should not be any big issues.
If the frame (unibody) mounts are cracked, then you have a bigger issue.

I have solved a lot of high pressure problems by asking some pretty stupid questions, so I in the habit of believing anything can be overlooked.

Good luck with it
Russ