Ted,
First, do not worry about purists. It's your truck.
However, the fix on the front of ypur '54 Panel is easy: reproduction dual-filament front parking lamps are readily available (and that is what was used in '54 with the turn signal option on a Panel Truck).
The rear lamps are a more difficult matter and you have at least two options:
1. "tuna cans" on the rear body-side or on the rear splash apron (as long as they allow you to open the rear doors).
2. dual filament "bullet" rear side lamps - these are now being reproduced but are expensive (and, this is what was used in the original factory option/accessory).
Tim
