It looks to be the side of the "inner to outer cowl panel" and in order to see the side of this panel means the "Inner cowl Panel" is missing.
On these trucks there is an OUTER cowl panel....and Inner to Outer Cowl panel and lastly and Inner cowl panel.


1937 Chevy Pickup
In the Gallery
1952 Chevy Panel
In the Gallery
More photos
1950 Chevy Coupe
Pictures!

I'd rather walk and carry a Chevy hub cap than ride in a Ferd.
I can explain it to you, but I can't understand it for you smile