Hey! Congrats! I also picked up a brand new, never registered 2024 Nismo last late summer! It was an amazing negotiated offer! I picked it up for $16,500 off the sticker price! I love it especially coming from having a 300ZX for 15 years and a 350Z for 17 years! It is an awesome car...
I bought a brand new 2024 Nissan Z Nismo in the fall of 2025 at $16,500 of the sticker price! It had a $10,000 rebate and I negotiated the rest, plus some free additional small items! The car sat for about a year in the show room! I pretty much think I was at the right place at the right time...
You answered your own question! Yes, I would rather have the closed system giving the engine the colder air rather than the open high heat from the engine bay!