I just checked Impala Bob's and they list a tool for pulling the spring out to the headlight ring.
the spring for my impala just twisted into a hole in the body. I used a pick tool that has a tight hook on the end for hooking the spring in..
..can be a challenge but persist and you will get it. on my car I had to do it 4 times. last one was easy...ha ha
check out this link www.google.ca/search%253A%252CnYCe9vSz3QMrxM%252C_&usg=AFrqEzd9E5xiaa5YY0aGOXwT8XjfZB-BJw&sa=X&ved=2ahUKEwj43ZOK093cAhUECKwKHTfhB3IQ9QEwA3oECAAQCg#imgrc=53ksky8WPojbdM: