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

bothcars,jpg.jpg

Yeah, it's hopped up to over 160...