code behind seat
 

If you are ever near melrose park, e-mail me and we will take the back seat out of my car.
X-6 is there in yellowish chalk. I found it when I replaced the rear package tray. Joel

Re: code behind seat
 

On most Norwood built vehicles yellow chalk was used to identify the body trim style. This is located as you've noted behind the right rear seat back-where the package tray lip folds over. X6 would denote X66 for a non style trim big block body. I have seen this on every Norwood car that i have dissassembled.