Behind the drivers seat you’ll find an Oxygen (bailout) tank :

It originates from the (green) ejection seat of a fighter jet that’s painted red :

The aluminium box it resides on is 10″x7″x3″ or 254×177,8×76,2mm. Here‘s one from LMB Heeger.

It also holds 2 big Cannon Elbows.

You can order our replica here :

Below are a couple of decompressors painted by our clients: