Technical Olds clutch/brake arm ID

Got these in a parts deal along with a flywheel and a late (51+) bell housing. No idea what they came off of. Can anyone help to ID these arms and hardware?

The one arm has a casting number of 569252 and the other 570397 FWIW

 

It looks a lot like the setup I took from a '56 Olds.

 

1952 t0 1956 pedal set up Just like the ones in my 53 88

 

The brake part looks the same as my '56 Olds.
Can't speak for the clutch as mine is an automatic.

 

I'm trying to get pics up... One pic (#3 pic) will show a complete 57 clutch pedal and the Z-bar thing. My 57 pedal number matches the number in post #1, so yours is a 57 pedal that is not interchangable with 56 or older. That's because there are differences in bends right near the lower pivot shaft. Those bends can be side to side, as well as different bend upwards, as the design changed a bit every couple of years in the 50s.

Another pic I will try to upload, shows the 57 laying on top of a 51 pedal. If you look close you may see the different bends. Pic #2

(One pic is marked 1952, because the former owner had said it was a 52, but just said last week that the parts car was actually a 51)

Lastly, I'm still trying to upload a zipped-pic file of a 56 setup taken from George Deloreans 56 Olds shop manual. He has been looking for a 56 clutch pedal to convert his A/T 56 olds. He is trying to clone the car he had as a teen in Detroit. (yes, he is a brother to the late John Delorean). The clutch pedal he needs, fits only from 54 to 56 if anybody here has a spare. I tried to get him one but could not.