I'm looking for advice on sealing a stock firewall. The class is GT, the car is steel.
I'm staring at numerous holes and thinking it would make more sense to simply overlay new steel over the existing wall, or preferably aluminum (easier to fab in my under-equipped garage), rather than try to patch each hole. I don't trust rubber plugs, and I like the idea of a smooth, clean looking, airtight firewall.
My welding skills aren't pretty, and am curious if such and overlay would be acceptable to the rules if it were attached with sheet metal screws, bolts or rivets.
If I can go this route, any advice on a sealant between the sandwiched pieces?
Thanks, all!
Chris