dropping numbers
Why the manufacturers don't just use the new dates I don't know. It would seem to me that changing numbers is just a way of someone justifying their job. When one of the parts stores here in town told me they didn't list anything for a 61 Cadillac I asked for 62 listings. The parts guy asked why I would want the 62s if my car was a 61. I told him it was pretty much the same car. With an I don't think so look and disbief he found the part I wanted. When I need exhaust manifold gaskets I have to ask for 67 Eldarado gaskets as that is the only listing they have. Yes, they are the same, just not listed for my application anymore.
And the non initiated out there wonder why we like finding old parts books.
Mike
61 M-M