It's a '79-81 (approximately) Buick Century 4 door, and yes, some could definitely be had with an optional turbocharged engine...Maybe Dennis Kirban could tell us more about these...
I've only seen one in person many years ago for sale at the Englishtown Swap Meet....1987-88 or so.
It was light blue in color with full hubcaps and Pat Barrett from Level 10 Transmissions was the seller.
IIRC a sign in the window stated that there were less than fifty made in 1980.
I don't know where the seller got those figures from but it could be possible.
I believe a board member who posts in the "before black" section has a similar car.