70 Dart Kelsey Hayes rotors

That's cool ! I see it though that he worked for JPL.

The house I bought in '12 was almost completely as the deceased owner left it as it was his 2nd but main home for years. I have yet to go through it all but know quite a bit about Bill, his wife, dog, nephew, businesses, career, hobbies, travel etc. The woodworking and other miscellaneous tools are priceless to me, brand new snips, drill press, etc.
Many Craftsman items in packages. I found NOS Sears and Roebuck stamped mailbox in the garage that's now out on the highway being used. Even found an expired CDL So know face size etc. This cat has books on almost any subject and was into everything. One smart cookie. Only one neighbor left that knew him and I can probably get Ol' Bill's stereo equipment for asking.
I count my blessings daily.

The specs you show are for the Budd disc brakes.
And the Budd brakes are only for the big C body cars.

If I was looking to get the rotors turned, I would ask around at the local cruise in, somebody always knows somebody that has a lathe to turn them down.