Would it be possible to add this bmw cup holder mount to integrate a bmw removable cup holder? Like this link below. If you get rid of the ashtray there would be no space to hide a speedbooster.

it kind of looks necessary though. Not a priority.
I would buy a shifter plate with that cup holder mount integrated. I can buy the mount and send it to you.
https://autowin.eu/en/preke/bmw-1-se...r-original-oem