With that said, many 'hot rods' are based off vehicles from that era and have a massive tuning community. Just don't think Morgan's have ever caught on and likely for the fact over half is made from wood and harder to modify vs a full steel body.
Perry even in the 30" many coach builder take car an modify them, in my point of view without damaging the overall looking have many things can be done , just a single example the front bonnet can be fixed in one piece and open from front to rear and can even maybe keep the same closing.
in the rear the light is far from perfect, a different style and looking of the Lucas one can be easily made.
Some already mod their dashboard but i am sure a good creative designer can come out with an other design with destroying the main idea, MK have for made dash board with 2 glove box, some use MIG clock so the possibilities is almost endless.