Thanks for your reply :)
I messaged Lock if he can help me, so far I got this:
But I can't see the back/bottom so I don't know if it's correct.
I was also thinking of using these instead of the 4073 round 1x1's.
I think those (4864b) would look great too, but I don't know if this will fit if you put 2 above each other with a single flat dark blueish gray piece in under, between and on top of them. How high is the 4864b compared to the 2 stacked 1x1 4073's?
So something like this:
Also the 87552 is an option:
It will look a lot like the engine in the movie like that:
