I LOVE THAT CAR!!! My mom drove one very similar over 100K miles. She got it used in late 71, drove it every day for 5 years. I still have whats left of it. It was a true stripper, 315hp 350, 4speed, 3.23 positive traction rear (not sure what Buick called them), manual steering, non power 4 wheel drum brakes, no A/C. It was identical outside, white but with a black vinyl top, also it had stock wheels with hubcaps. Interior was black, had bucket seats, a hurst shifter with consolete. We had no clue of how rare it may have been. It was just a car then. We wore it out. Sad.....It was, however, the inspiration (and a parts source) for the Buick I have now (in the pic below with my challenger). The Hurst shifter, tach, clutch pedals, air cleaner on this car came from mom's old car.
Jess