?, if I may.
Is a GTA Jr still alloy and rivetted together like a GTA. Is the difference only trim (ie. grill, etc.) ... and ofcourse engine size!.
Why do you refer to Anthony's and Andrew's ex-Bartlett car as Autodelta cars?. Is this because they prepared them for racing at some stage?.
I thought ALL GTA's were assembled by Autodelta? ... am I wrong.
Thus my understanding is that we have the following:
- 1300 GTA (is this what you refer to as the GTA Jr? ... I assume so

, der I should save myself the embarrassment and remove the question above as brain has just started to work ...

).
- 1600 GTA.
These cars were all produced as Stradale versions and then Autodelta turned a few into Corse (or race) cars and made some weird models, ie. 1300 GTAsa and GTA wide bodies, etc.
Pete