For your future turbo, I think the stock box may be restrictive. Cant stress enough how much engine bay air sucks (as in is bad) compared to fresh air, so get it plumbed right.

If you look around you might see that I've tried pods in the bay, custom heat shields, open enclosures in the bottom half of the engine, etc.

Personally, a 10degree day is awesome and a 30degree day makes my car feel lazy. IMO heat plus small turbo's = more noise but slower.