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We are not done with the firewall code examination...we will spend some more time on it prior to paint

That's fantastic getting to those firewall codes!! How did you get the firewall to the point where you could get that detail on all the grease pencil markings, without wiping them out??

To answer your question: VERY CAREFULLY. Haha. And they are there only once, so you got one shot at recovering them. Frank and I have developed several different methods of removing layers of paint, grease, dirt, etc. and different light sources to be able to identify the markings. So, a lot of it depends on the car and/or what the previous owners have done to the firewall making this possible. Doug’s Yenko had layers of paint added over top of a virgin firewall so we were able to recover a lot!

Frank and Matt did all of the work. Each car is different due to its owner/ restoration history. This firewall was 7,257 miles of virgin metal... there methods differ between cars using different solvents and sometimes possibly a hand blaster. The correct lighting is 100% key to seeing things.

Thanks guys! I know the firewalls in both my cars have been previously painted, but I don't know what was done before as any kind of prep (or not). When the time comes, I'll be asking for guidance.