Great to see a Piquet drive car here.
Diorama looks nice. The Subaru-dio is excellent, by the way.
I would like to suggest to show the pictures in their true size in this thread, because normally I'm very lazy, and don't want to click to see a picture.
For this car I'll make an exception, because I need some inspiration as I have this one to build...
I may have some pictures of the engine. I'll have a look and see what I can dig up !.