Converted Stock Radio and Ashtray Mod Question

[Thundarr]

Just got my stock radio back from Gary Tayman (converted to AM/FM with bluetooth and aux input jack). http://www.garytayman.com/

The unit was completely cleaned and reworked. All of the functions operate though various tricks with the existing knobs and pushbuttons. It really is slick.
You can see that the unit looks as original as before. The bluetooth microphone and pairing button have standard pin connections in the back of the unit with plenty of cabling to locate it wherever you want.




Next, I want to take out the exisitng ashtray and replace with the BMW sourced extending cup holder and also make a panel for the pairing button, microphone and add a built-in usb power port.



Now to my question. Does anyone have any suggestions about a set of low profile side hinges that to hide my franken cupholder control panel assembly with the existing ashtray front plate. I think it would only need to swing down 90 degrees to allow the cupholder to clear.