For simplicity and parts availability, can't be beat. Looks good, just don't expect performance of any kind. It's hard to believe how far that model of car fell from what it was just a few short years earlier to what it was in the mid-'70s. GM was just skating by on brand loyalty at that point, I guess.
My uncle had a new '78, (I think), that he loaned me once when he went out of town. I was a car crazy teenager who was used to driving cheap schit boxes and I distinctly remember how slow it was. Stock L48 automatic. It was winter in MN. and I could not even get in trouble w it. I think he knew this, I mean who would loan a fast car to a teenager?
Looked like a million bucks, though.
If you don't have emissions to deal w where you live, you could always put any decent SBC in it and have a good performing car. The whole shebang would not cost all that much. Not sure what it would take to make it handle but can't be that tough to do. But then you are talking about a project, not a turn-key deal. As-is, it's a dog.