Topic: Head light doors

[qman]

I've got a quick question....getting ready to install the head light buckets and noticed that I have only two head light doors. The first is C9ZB-13045-E and also has the number "1" stamped inside the ring.   The second is C9ZB-13045-B.   The letter B is hard to read so I might be mistaken. This one has the number"2" stamped on the inside of the ring. I believe I need these doors on all four head lights but I'm not sure what identifies the inner lights from the outer lights can someone shed some light (no pun intended) on this issue.
As always thanks in advance for the help.
qman

[7Lscjracer]

The chrome ring with the screw hole at 12 o-clock goes on the outboard lights, the inboard lights have the plastic surround instead.

[qman]

Thanks for the help.
qman