advice on rubber installation of 1941 Series Sixty Special

[Jack Welch]

I am currently restoring a 19941 Cadillac Series Sixty Special, that I didn't to take apart , so not totally sure how it goes bak together . I am currently installing the rear bumper and bought a rubber gravel seal from Steele Rubber. It fits between the bottom of the trunk and the rear gravel shield . Is it just a friction fit or was the original glued in place. Steele tech support could not answer my question.  I also have a rubber piece the goes between the gravel shield and the rear bumper. It was originally had in place by staples, wondering if it was glued also. Has anyone seen any type of illustrated m=body manual for these cars. Some photos are in the Fisher body manual, but not many .

Thanks for any help.