Under the hood is a small-block V8 with computer-controlled Quadrajet carburetor. If this is the original engine (unlikely, given how readily Chevy V8s get swapped), it's either a 267 with 115 horsepower (no, that's not a typo) or a 305 with 145 horsepower.
It appears that the roof has been cut off and reattached, for reasons that must have made sense at the time. Perhaps the car suffered a rollover crash early in its life and received major body repairs.
Lots and lots of fuzzy beige velour inside.
"You can spend more for a car, but why in the world would you?"