About turbochargers.

I KNOW that aspirated engines are far away, but i have been thinking about it a lot.
When creating a turbocharged engine. Are we allowed to decide the turbochargers size and boost pressure?
If so, it creates a lot new opportunities in the game(meaning you can really ruin an small engine with huge turbo.).
With it we can create very varying engines. We can add more power for the whole rpm or just to the higher rpms.
And is it possible to have supercharger and turbocharger in the same engine?
When creating a turbocharged engine. Are we allowed to decide the turbochargers size and boost pressure?
If so, it creates a lot new opportunities in the game(meaning you can really ruin an small engine with huge turbo.).
With it we can create very varying engines. We can add more power for the whole rpm or just to the higher rpms.
And is it possible to have supercharger and turbocharger in the same engine?
