You'll need to provide a lot of documents, but it can be done. Be ready to produce a Title in your name, radiator vin, cowl vin, and engine or trans vins if you have, fender tag if you have it, Build Sheet, door decal and anything else he might might need to prove it's a legit car. It's not a perfect system, but he does try to make sure he's helping people that are not dreaming or trying to be dishonest. I don't think you are going to be able to just provide a title or bill or sale and get a dash VIN.
You can get a VIN tag made ? I thought only fender tags were able to be legally reproduced ?
