The NAPCO 4-wheel-drive product/conversion is not shown in the 1953 (or earlier) Chevrolet Truck Silver Book.
NAPCO (Northwestern Auto Parts Company) is listed/shown in the 1954 Chevrolet Truck Silver Book. There is no NAPCO emblem/badge on the hood (in the illustration/advertisement in that year's Silver Book).
[The conversion was done by NAPCO.]
The 1955-2nd Chevrolet Truck Silver Book shows a badge/emblem on the hood of the NAPCO conversion photo/illustration - that emblem is located above the Chevrolet hood-side emblem.
[The conversion was done by NAPCO.]
If I remember, I will see what is in the 1955st Silver Book.
[I cannot find my 1955-1st Truck Silver Book - MT's photos show a 1955-1st truck hood side emblem - it is different from the 1954 truck hood side emblem.]
Last edited by tclederman; 10/26/2020 4:48 PM. Reason: added information in brackets - []
