Verne Frantz's 63 Impala Anniversary SURVIVOR

[Verne_Frantz]

Thanks again, Mo.
I'm learning more and more.
If you don't mind, I have a question about the primer.
The red oxide primer (like seen under my '63 in this thread) seems to be everywhere, even in places where it would be hard to cover by spraying. I'm embarassed that I don't already know this, but were the bodies dipped in that primer, rather than sprayed?
The lower recesses of the floor pans have oval shaped galvanized plates (about 3" by 4") screwed down, with sealer, to cover holes in the floors. I'm suspecting those were drain holes for the "dip". These plates never have any primer on them, although the ones in the trunk were covered with the water based spatter paint.
I suppose they "could" have been used with the jig to position the floor sections before welding them together, but I'd doubt that.

Can you continue this educational exercise and add some knowledge here?
Thanks

Verne.