Exactly...every combo has different cooling needs.
Some don't need a shroud, some do.
It's not a case of if you park the fan close enough to the radiator it'll work every time.
It wont.
Again, how much power do you make at idle? Or cruise? If you have heating issues in those conditions, it's not a shroud that will fix it. The shroud is used when the fan is too far from the radiator. That's all. It's not magic.
It also won't fix other issues like the water pump turning to slow.
