No. The connector pattern is also entirely different on the new switches I've seen.
I was able to locate the spring-loaded button that would normally be pushed through the pin hole. I was able to push the button in, and turn the lock a little more ccw than before, but still couldn't remove the lock. Since I don't have a key, would a blank key work to remove it?
Good news: I just found out the correct Delco part number and several vendors have it available for about $40. If I can't take out the lock, I'll just buy a new one.