Some Late '65 and '66 Mustangs did not get the "Rubber Snubber" and "Metal Snubber bracket", but rather they had just a piece of Stock Steel cut to length actually "Welded" to the Brake Pedal to act as the "Snubber" Bar. It was actually "Hit or Miss" to whether you got a Manual or Automatic Brake Pedal with the Correct Bracket and Rubber Snubber or just a Welded piece of cheap metal. It's really "Unknown" whether this was just a "Supplier Issue" with the Brackets and Snubbers or whether it was a Cost cutting measure... We'll never really know.
The Replacement "Welded, Cut Stock Steel bar" was crude, but it did the job, Even though it would make a "Clunking" sound when people let off of the Brake Pedal sometimes. Many Late '65-'66 Mustangs had some of these "Welded Bar" Brake Pedals. The Brake Pedals with the actual "Correct Snubber Bracket and Correct Rubber Snubber" are more in demand because those are the actual Brake Pedals that are supposed to be there and were the correct design that was originally intended.
***See the Attached pic of a 1966 Mustang Automatic Brake Pedal from 6F07T3807xx . It is the Original Brake Pedal to the car. I repainted it 20 years ago. It was right before I had dipped the top of it in silver cast paint at the time. *See the cheap small welded bar at the top where the bracket and snubber should normally be. A lot of Late '65 and '66 Mustangs got these "cheapened" Brake Pedals. I've pulled a number of them out of quite a few cars and replaced them with the Better "Correct" ones...with the Snubber and Bracket...as originally intended. My 1966 Mustang Convertible 6F08T3529xx had one of these "cheapened" Brake Pedals as well.
)
Tony K.