Brake shoe size
What he has is older stock and some of it may be pretty good stuff. I had some Raybestos brake pads in the late 80s that were really good and now NLA probably due to asbestos content.
But I prefer not to describe materials as good, best or obsolete because those are not functional or objective descriptions.
Linings have a variety of materials that go into the composition. I wouldn't write off or exult a lining performance based on knowing it did or did not include asbestos.
We can say that lining dust in general is dangerous to breath - wash it down, don't blow it. Furthermore, asbestos dust and fibers has particularly dangerous consequences if it gets in the lungs. So if you don't want to use lining that was made with it, that's understandable.
what's the problem with having my shoes relined?, I'm not concerned with having asbestos shoes
the problem will be finding a shop. Rochester brake is one I'm aware of on the East Coast. They can arc shoes and have a pretty wide selection of materials. They don't have much of a website, so you'll have to talk with them if you are so interested.
First things first. Check the shoe frame (metal part) for a number and note the location and shape of the holes etc.
Then look in the 1968 service manual to see if it looks the same, or whether they match the '69 up shoes and adjusters.
Sometimes people switch to the '69 up shoes and adjusters.
