It does not have the endura front end on it and the following indicate it is a '71
1. Metal rear valance panel not plastic
2. Fake louvers on the front fender not plain or Pontiac T-37
3. Front panel is plastic not metal.
4. Front grill is recessed (unless LeMans Sport)not with 1 or 2 cross bars almost flush with outer part of grill.
5. Front valance panel is painted not chrome.
If all these are true then unless a bunch of modifications have been made I would say it is a '71.
She can check these out pretty easily unless the car is setting in the swamp or deep grass.
If it had an endura front end then there would be Louvers vs air vent in front fender. Also on 71 grill is to the front of the openings and 72 grill is quite recessed.
I'm going off the air until sometime tomorrow. Yes, there is no party. Don't drink.
I will send an e-mail with a couple of pix of '71 T-37 front end. Louvers would be where Pontiac and T-37 emblems are.