Hi. Hope you win the taillights. That would have been the builder’s choice to use Lucas instead of the VW’s. And a good choice!
Yes, the Duchess uses a real TD grill. There are some slight modifications you need to make. The template and instructions are all in the assembly manual.
I just looked at the door hings for an orignal TD on MossMotors.com. The Duchess hinges are not “original”. The door handles, latches and strikers provided with the original Duchess kits are “original” TD parts.
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)