I called Virginia Mustang and ordered the brake light switch and they sent me a Scott Drake switch with part #C9ZZ-13480-A, which is one that S2MS listed above. The packaging references 65-66/67-70 Manual Brake Switch. It took some patience to get it installed but the brake lights are working perfectly now.
I highly recommend taking 5 minutes and removing the front seat to make climbing under the dash easier and WAY more comfortable.
Jeff