Great job, looks like a very nice install. You are a first person on this board who I think did an E39 install.
I also have an E39 and will be starting my project in a next few weeks ,getting all the parts ready now. I am very curiuos on how you managed to install a Indash Equilizer where the cup holders should be, and I can`t really see on how you installed your liliput in dash. I wish you can take more pictures so all of us can see.