I just bought one of these 'OEM' Pedals a couple of weeks ago and it installed without a hitch in the '73. It was, in my view of good quality and actually was an improvement in design over the 36 year old unit that it replaced. The original had the hinge exposed so that it could rust and get corroded over the years. With the wear to the rubber and the corrosion, I decided to replace it. The new unit is encapsulated in the hinge area and may or may not have a metal hinge internally....this may not be a bad thing. I am in the process of installing an RS Carpet kit in the '73.
On thing is for sure, when I press on the 'loud' pedal, it works just fine!
Eric