The laws on this vary greatly and not knowing your state doesn't help. You can go to SEMA action network
and check state by state for your requirements. I bought my old '47 Ford out of a field with no title. I found a title from a title vendor in Arkansas for a '48. Since the number on the frame was illegible and eventually got ground and filled during the build, I had some stamped plates made up with the number from the '48 title. This satisfied the TX DPS and I got a new '48 title in my name.