I am trying to find information that would tell me the correct ECL (revision/update level) for each option installed on my car. I do not have the PoP, build sheet, etc.
For example, assuming that a SS396 was built in the last week of May of 1969, the RPO would presumably begin with "5Z27" followed by the two character ECL. But since the ECLs increment during the course of the production year, what would be the correct ECL for a car built at the end of May?
Thanks in advance for any help.