The hood's off a '74 Le Mans Sport GT and the Endura nose is off a '74 Grand Am...
The fender and decklid badges say Grand Le Mans, and the roofline, taillights, and rear bumper agree that it's a '76-'77 Grand Le Mans, but a "6.5 Litre" badge from a Grand Am has been added.
I'd drive it.
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