Yep that is an issue alright as it would have to go to LA
But it may be worth investigating
We never got 2 door Belairs here or impalas for that matter
Our impalas for those years were effectively Belairs with some odd trim on them built in Canada
Pontiac RHD dash same for 61-62-63-64
I think the trunk lid for a 2 door post is a different size to a four door (i might be wrong)
I may have to ask Lynette, she will let me know if im wrong
Also the holes on the tail light housings are smaller for the bel air , because the wiring that hold the bulbs has a smaller metal insert that goes into the tail light housing. The impala has the larger black plastic bulb insert holder. Check your wiring to make sure you have the correct tail light housings to match the inserts on the wires you will be using . Yes, all of the trunk lids are the same size for 62's....
I have 62 left front aluminum fender trim and I also have nice 62 original Belair taillight aluminum housings for the trunk lid with the smaller socket holes. I probably have some nice original trunk lid wiring for a Belair trunk lid with the factory sockets for the taillight housing with the smaller socket holes.
I located a 1962 bel air trunk lid in Council Bluffs, Iowa but the lid has some light hail dents. I think it takes $ 125 to buy it.