UPDATE...
A little bit more added to the bottom and side of the engine.
This is the current placement of the engine.
But I was thinking I might move it a bit to here. Not sure if I like it.
I also decided to add something to the bottom of the sphere.
A little bit more added to the bottom and side of the engine.

This is the current placement of the engine.

But I was thinking I might move it a bit to here. Not sure if I like it.

I also decided to add something to the bottom of the sphere.
