The Service Letter is dated 12/5/63. Console cooling kit - Avanti models without air conditioning.
Quote:
"Current production Avanti models, identified by square headlights, are equipped with a cooling device for the console, transmission tunnel, and shift control lever."
This may indicate that all Avantis without air conditioning (R1 & R2) starting at R-4892 had the cooling device installed at the factory.
The cooling kit described in the service letter is for Avantis with both automatic and standard shift transmissions.