Hi there Mike, good to have you following along. I have been tying up loose ends on my '40, stripping off accessories and getting it ready to ship off for paint, before jumping back on the '29. The decision on the firewall will come when I get to that point. It might be aluminum, because that's easier for me to form and shape, and looks correct on a race car. I am a fan of clear anodizing, for that spartan look.