As long as you get radiator hoses that fit it should work. Probably have to use a SB shroud and modify it to fit the radiator since the fan will be centered in the car if it has the SB frame mounts. Shrouds are cheap. You can put a BB one on it when you switch the engine.
Experience...... It's what you get when you didn't get what you wanted.
Can't say how it will work on a curved neck radiator but a 68 SB shroud for a car with AC is for a 23 inch radiator. That same shroud won't work for a BB engine according to Alumitech due to position of the fan being different.