I picked up an origial style flat one from Steele Rubber.
Note : this unit is supposed to have a bit of slide to the bolt holes based on original installation.
Note the wear pattern on the washer and flat steel.
There is a "lip" on the washer that allows the snubber to be tightly bolted in but due to the limited contact area it allows the snubber to move in relation to the teansmission / engine movement.
If you do not have the washers let me know,
There are GM Seat mounts that are a little thicker rewuiring a longer stud that I used on my installation that I can take a picture and post.
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