This article evolved from these two threads:
Original speakers and speaker bracket photos courtesy of BLK65K10.
The in dash speakers for a 1960-1966 Chevrolet/GMC Trucks.
Dual Front Speakers
Excellent quality replacement for original front in-dash speakers.
These speakers can handle up to 60 watts and are built
and designed to fit directly under the dash including all correct
mounting brackets and wiring. Each assembly includes two speakers.
year : 1964-66 (they also make one for the 1960-1963 which is different)
model number : 2012
This speaker comes with no instructions at all. It also does not have the rubber cushion mentioned in one of the captions above, which is the speaker design that it replicates.
I have not hooked it up yet, but I have not heard anything wonderful about it from anyone who has used it.