As a side note: by 1985 in the Chrysler Fifth Avenue, the 318 (which was the largest engine offered in any Mopar passenger car after 1980) went to a roller cam and was rated at 140 HP and 265 lb./ft., which was up from the year before at only 130 HP and 235 lb./ft. A far cry from the powerful 318 polyspherical headed variant of the late 50s with as much as 290 HP and 350 lb./ft. of torque that was also offered with an optional dual quad setup.
By the mid-Eighties, the car companies' power train engineers figured out how to meet emissions and mileage benchmarks with power increases, and started putting the engines just five years before to shame.
This might not be the most desirable car or the most pristine example, but overall I'd say that's well-bought for that price.
I guess a previous owner took down what was probably a sagging headliner, but never put another one back up. It is kind of weird though.