Hello, I am working in the metal of my 70 Charger RT. I want a clean restomod and part of the project is a clean and smooth engine bay. I am now working in the firewall and I would like to know which holes can I fill and which ones are completely necessary. Car will have a fresh rebuilt 495 stroker with Vintage Air air conditioning system. Any advice or picture is welcome. My idea is something like the second picture below. By the way, I attach one image of the Challenger´s one. I guess the holes disposition will be more or less the same, isn´t it?. Thanks in advance for your help.