Correct. Not sensible at all. Except so much more sensible than retro-petroleum stuff.
Watching my brother-in-law buy a 1971 Chevelle for his 16-year old daughter because she thought it looked cool only to have him sell it at a fat loss 3 months later because she couldn't choke down the gasoline fumes driving out of the school parking lot every day was instructive.
Or tune the engine correctly. Probably has an off-the-shelf "performance" carb that's set much richer than it should and a "full race" cam that only makes sense for a track car, giving horrible fuel economy and actually less low-end power.
My daily driver is roughly as old, has a 400 V8 with a 4-barrel, idles so quietly I've had passengers surprised that the engine was running, and gets around 20-25mpg if I resist the urge to open it up all the way.
Watching my brother-in-law buy a 1971 Chevelle for his 16-year old daughter because she thought it looked cool only to have him sell it at a fat loss 3 months later because she couldn't choke down the gasoline fumes driving out of the school parking lot every day was instructive.