Anther caveat ...
... (fancy word for a 3rd grade drop-out) that may have occurred is that there were two different 1954 239CI ENGINES, one made in DETROIT - (DIF) (EBU - PASS CAR) and the other made in Cleveland (CF) (EBV - TRUCK), the CF having the more advanced design(s) of the later 272. There was also a 256 MERC - FORD PI (EBY) that was a CF engine so after all of these years anything could have happened. If the engine accepts later 272/292 front dress, it is most likely a CF engine, if it is actually a 239 or 256.
The 55/57 BIRD front mount design was taken from the LT (pickup).
dmsfrr had the same situation (239) with his 55 BIRD.