This weekend I saw a 65 and 66 fastback plus a 66 GT350 and they all had only one release latch for the fold down seat (passenger side). Since my 67 has two I always assumed there was two from the start. When was the change made? One of the owners said it always rattled and he wedged a piece of carpet to stop it or keep the seat down.
Did the two latches become the standard from then on?