[njsteve]

That is the wonderful thing about having the original owner (Enrico) just a phone call away. And he has a "photographic memory and obsessive compulsive disorder when it comes to his cars" (his quote, not mine) :-)

He installed a mechanical oil pressure gauge in 1973 and there was a T in the oil sender line. The original sender unit went, when the mechanical gauge was installed.

The throttle spring has some paint residue on the ends. I will have to look at my other photos to see if they are any better.

As for the master cylinder, do you have an example of the stamping I can compare it to, and the location?

That is 100% the original exhaust system per Enrico. He confirmed by the photos. He especially loved the fact that in 40 years no one has tried to readjust the chrome tips that he pointed outward, from the way the car was delivered on 07/31/73. When the car arrived, the tips were pointed toward each other, much more than they should have been. He loosened them up and put them where they are today. (I actually tried to readjust the passenger side tip yesterday so it wouldn't vibrate against the quarter panel, but it is permanently attached to the pipe.)

Here's a couple close ups of the headpipe mounting flanges. Those nuts haven't been touched in 40 years. (Jeez, that's a punchline waiting for a joke...)