Let me educate you on a subject. It was called the 1980's.
High school kids all across this country murdered 1970 Road Runners by driving the crap out of them and generally not caring about cars. Flipping them, racing them, off roading them, and killing them in highschool parking lots.
So, someone who probably tossed a junked diesel in a sub $500 (at the time, most likely) car should not be shot. You can drive that car as-is and have car snobs look down on you and hotrodders be your best friend, or pull the motor and but in an big block in again. Really, the car is far from destroyed. It looks to have an OE radiator still.