This is why documentation is so important. No matter what make of car you have, there could be "deviations" from the originally specified production car. I know of a few hundred Ford Ranger pick-ups made around the end of the 1990's that have brake parts purchased from the ACE Hardware store in Columbia MO because the line ran out and, without thinking, planning sent someone out to buy what was needed to keep the line going. Because the "fix" was not approved by engineering in Dearborn several people lost their jobs at Columbia and the Plant Manager was ordered to go back through the Ford Q1 quality system process all over again; the third-party ISO Registrar came down to the plant, took their certification plaque off the wall and took down their ISO Pennant because of the breach.
PS: Since nobody knew for certain which assemblies the parts went on, well......that was back then.