I'll check, you're hitting me at a bad time as we're packing and moving to head to a new house we closed on this week. The drives and notebook that have that info may already be lost in the stack.
As far as the dash vin goes, talk to the company. They want pics of the deteriorated vin tag and usually copy of tiyle, sometimes registration.
But, thats only half the battle. They're attached by a specialized 'rosette' rivet, not a plain round one. LEO sees a round rivet and you're instant red flag territory. Used to be a outfit out of NH thay sold them to anyone, but, generally you need to be a licensed repair shop to purchase the specialized rivets.
For any swap windshield comes out along with dash. Has to do with access to putting the rivets in, and doing it at the right angle.
In theory, if a shop was hired to remove the windshield and write a ticket for cleaning up and repairing windshield channel rust damage that probably gets you documentation supporting a legal remove and reinstall, just using a different plate going in.
Dashboard wouldn't impact or necessitate vin plate removal, but, rust around it might. Talk to some shops that do restorations on old cars around you as a feeler. They would probably be willing to help out as long as everything that is still there, but deteriorated, hasn't been touched yet. It gets fishier for them when they see identifying info already being replaces, makes it feel more like an vin change to something new for questionable reasons....
