It has the famous 180 degree headers GT40 sound no doubt, but I think the pitch is wrong? At 8500rpm that engine would scream it guts out. When you're hitting the limiter it has the same pitch as the gt40 racecars at 7500rpm. I for one put the NA sound in the gt40 in game, and it sounds rather boring, revs dont match.
https://www.youtube.com/watch?v=EfhSb2cAN_Q&t=354s