Jeff,
Thanks for your comments. it seems that the decals are more complicated than just sticking on what is in the kit. So I have a few more questions.
1. How should the "Battery Ok" decal be filled out?
Filling out a 66 Dearborn battery inspection decal is not the easiest thing to do since few have survived over the years. The stickers were not made to last past the assembly line - the paper quickly wrinkles, gets wet, falls off or becomes unreadable
Looking through my pictures I have not a single one from that time period or plant. And its difficult to try and apply what they did in 65 over to 66 since there are multiple methods of markings in 65 depending on (best guess) when the car were completed or even if the inspector was a regular or fill in guy. Have seen all hand writing, stamp for date of inspection and a inspector punch out for the inspector identification
You will be looking to use (based on what I've seen) the sticker again with sharp corners (no rounded corners here) with the black stock printing for the standard format to start.
2. The correct "P" has square corners?
Yes - Some of the current and present reproduction have round corners. Not sure where that started but they have been around for over 20 years which can lead allot of others to believe they are original. Old and worn = original
3. Any suggestions as to where I can buy the engine ID decal for the coil and the radio resistor one?
Believe Osborn makes the voltage regulator ones but not a great IMHO reproduction and some restorers have choosen to make their own
Check ECS for the engine ID sticker. NPD and Virgina should both carry them also. They may be in the "concours" decal section
4. You are correct, these are vinyl based decals. Are there sources for the correct paper ones?
Making them yourself - no easy button this time