I think we should simply stay with the "Heritage" classification and specify which car has been finished by whom and where the Chassis/body were produced, to go back to the idea of "built buy AC craftsmen in an AC factory". There are a few cars out there, built by Steve Grey and now one by me, but I learned there are a number of chassis/bodies stacked up somewhere ready to be completed (where did these come from?).
There is also the RS car built by Rod Leach, based on a saloon, he is advertising now, so unless all these cars are sorted, at some point they will pass for the "real deal" as some Air car Cobras have.
Gus