I believe Classic Roadsters’ Duchess was the only TD reproduction with a bench seat. Classic is still in business. But they no longer produce the Duchess.
You might try to contact them and see if they can help you out. Contact Don Scott at email@example.com
Classic Roadsters II
39342 County Rd. 185, Dept. KC
Sauk Centre, MN 56378
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)