Basic door lock keying 101

Iv'e noticed on the early a bodies that the door cylinders cover appears to be staked into place. I'm guessing that I'd have to cut or chisel back to get the cover off and try to restake the cover. I have about a dozen door cylinders and some without keys I might just give it a try now. I have a few set of door locks from A100's and they look like a-body ones.

I had to have a locksmith do an early A one time and he said those staked covers were a real issue - but can be done. A100s (at least up through the 69 that I had) appeared to have used the same ones as the early A Body (at least the exterior was the same).