Please note that fender serial numbers tend to overlap by at least a year, and thereby the date of your guitar can only be approximated.
Therefore, while helpful in determining a of production dates, a neck date is obviously not a precisely definitive reference.
Neck-dating can be useful in determining the was produced, rather than the complete instrument.
I've looked at a number of sites, but I can't find a year of manufacture for a Fender Stratocaster made in Mexico with a serial number that begins with MZ.(I presume this isn't MN and the N is on it's side??
This is not intended to enlighten experts so please keep that in mind while reading.
The new Fender did not acquire any physical assets of the old company, just the name "Fender".
I've only played a USA strat in a shop as a comparison.
BUT note that the "E" and "N" series does sometimes appear on "made in Japan" models.In March 1985, CBS sold Fender to a group of private investors.The serial numbers do not reflect this change - Fender continued to make instruments using existing serial number schemes.Unlike the auto industry which has specific model years for their products, most specifications for a given Fender instrument model, change little if any, through the lifetime of the model.The neck date simply refers to the date that the individual component was produced.
Each guitar John Cruz makes, regardless what kind of guitar, gets the next serial number in line.