V8 Engine block

This is my first major design-build, so be kind would love some comments.
I took the inspiration from many different designs I have seen all over the web.

The pullies are all GT2 toothed pullies with 5mm bore.
the belts are standard belts (size to be added once I measure)

All screws are 0.8mm diameter thread (more details to follow)

The drive space is a 3v gearbox motor that mounts into the supercharger, this can be linked to your RC control to make the pullies move.

All bearings are 10mm diameter with a 5mm bore,
4 plain bearings that go into the back of the block
1 plain bearing in the supercharger face
4 flanged bearings that go into the front face

In the supercharger intake, I am working on the space to fit a micro servo to work the.flaps.

Updates to follow