my 74 cuda weighs about 3600 lbs, as driven on the street.
So figure 800 lbs or so less minus the drivetrain, minus another 1000 lbs for interior, fenders, glass, etc.
I'd think you'd want at least a 2500 lb model
Buy bigger, its safer and stronger.
If i buy jackstands for my 3600 lb car , I pay extra and get the 3 ton jackstands, instead of the 2 ton.
Better to spend the extra $$ , and have a margin of safety.... I'd rather spend the extra $15 and not be scared to wrench under the car.