68 Charger Restoration Need Help!!!

I am restoring a 68 Dodge Charger 383. The car is basically still stock but has been painted once and has had some body work done. In the doors and the quarter lock pillars on my Charger there are undercoating holes that are 1/2" diameter and have no plugs. Were these holes stock from the factory? I am trying to restore the car back to factory and would like these to be accurate.

I have pictures of the holes so emial me at bmcalear@gmail.com if you can help. Thank You.

These are probably where the dealer or first owner had the car Ziebarted or other form of pumped-in undercoating. I don't recall that mine (early production '68 R\T, 440, 4 speed, Super Drag Pack, radio delete) had such holes.