quote:03673..it's a 72 U.S. spec car
Then, to answer your initial question:
You have a Pre-L Pantera.
NOT a USA GTS.
NOT a European GTS.
It is very likely the gill fuel door was added, as this change did not officially begin until VIN 5001.
But being a deTomaso, it might have been pulled from the assembly line only to be returned at a later date when the gill fuel door was installed. Not likely, but similar weird combinations have turned up on well-documented cars.