Hi Brasco and welcome to sYc. Does your card look like this?
This was also found in my back seat. Can you post a picture of your card? We've got some smart guys here to decipher it or if you like the guys over at
Team Chevelle can help you out. Basically, this card is a description of your interior make up. The body no. will match your trim tag on your cowl (except on the trim tag there will be an additional number at the beginning). Style no. and Trim no. found on this IBM punch card should also match your trim tag. Also, on my punch card are a couple of interior codes. A52 is a front bench seat, and B55 is a deluxe front seat cushion.