Just curious about where or when most people would "draw the line" so to say?

Creature comforts? Gas milage? Driveability?

Example.
I have a friend with an 87 Monte SS with a Bill Mitchell SB 427, 13.5 to 1, aggressive solid roller, 4.10's 4000+k converter,.. ect, you get the idea,
no a/c or heat, fiberglass trunk and hood. Full interior. More or less.
He tells me it's 100% streetable.

Car runs low 10.30's-hi 10.20's on motor.

I would say it's VERY borderline at best being on a steady diet of 110 fuel and Maybe 5-6 mpg at 50 mph.

I drive my WE4 on the street once in a blue moon but that doesn't make it a street car.

IMO just because you CAN drive it on the street doesn't make it a street car.