Ron, I'm guessing that the only difference might be the front emblem mounting holes, which would require a different part number, but can't say for sure if the rear edge at the cowl would be different, as the cowl parts on the cab appear to be identical from 47-55.1, although on the 54 the cowl vent is slightly different shaped.

Maybe I'll try and hunt down Denny Graham's post about this. Standby.

[on edit]Here's one by Denny agreeing that the difference is in the front emblem mounting holes. Link

Here's some info from Carl52 on the subject found while searching. Link And another opinion from the same thread as Carl's. Link

Last edited by klhansen; 10/14/2023 8:44 PM.
Kevin
1951 Chevy 3100 work truck
Follow this saga in Project Journal
Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.