1964½ is a term that is used by Mustang owners and enthusiasts to describe
the earliest Mustangs ever built.  Although Ford never officially used the
term "64 and a half" to describe these cars, they did arrive on
the market in early 1964, before other true 1965 models. The first Mustang
actually rolled off the Dearborn, Michigan assembly line on March 9, 1964.
This was in the middle of the normal 1964 model year, giving rise to the
common term "1964½" Mustang.

These early cars also have a large number of important differences from the
true 1965 model Mustangs.

Basically, if the car was built before August 17, 1964 - it will have come
with a generator instead of an alternator, and therefore be considered a 64½
Mustang.
I am moving out of country need to sell love the car. I've owned it for 13
years.In a climate controlled storage unit.
Thanks all who read faerydaemonz@aim.com email