Looking good! Love the work you've done to the interior. Just fantastic. You're pouring a lot of detail into this, and it's great. These drift cars need some good attention from a builder like you.
I have a few cast resin copies of the valve cover from an RB26, I can send you one to put under the hood so there's something to be seen through that hole. But I don't think the motor sticks that far forward. On the 1:1 car, there's probably just radiator or ducting to be seen through that hole in the hood.