Thanks Mike...Did you find the broadcast sheet for your car?
This is the buckle tag and date code on my 67 04B w/standard interior.
I also checked my 05B NOR and it has the same buckle tag. Interesting enough are the date codes for both 04B and 05B were Jan 1967 separated by only a few days.
GM must have made these belts in huge number batches to have early dates for midyear cars.
I haven't found the broadcast sheet on the 04B LOS but I haven't removed the gas tank yet to look for it.
I did find the UOIT and an electrical inspection tags under the carpet.
Mike