Jerry,
Is your brother’s TD VW based? Or front engine?
If it is VW based, it is likely the titling state used the VW pan vin, which is stamped into the center tunnel, under the TD’s seat.
If it is front engine, there might be a VIN plate ona door jamp, under the hood on the firewall, perhaps near the windshield where factory built cars have their VIN plate.
Paul Mossberg
Former Owner of a 1981 Classic Roadsters Ltd. Duchess (VW)
2005 Intermeccanica Roadster
If you own a TDr and are not in the Registry, please go to https://tdreplica.com/forums/topic/mg-td-replica-registry/ and register (you need to copy and paste the link)