All 1974 Pontiacs used the same form, which differs slightly from the 1973 form. The Routing Code box in the lower left corner contained shipping codes. Occasionally there’s a giant letter or number, made up of individual characters, which signifies the carrier code (example; B, M, 42, etc.). It was made large so that it was easy to read for the transport loaders and drivers. Our window stickers have the correct information in this box, so depending on where your Pontiac was built determines whether we add the giant letter/number.