This is the panel that surrounds the radio and OBC and climate control switches from an E30 M3. I replaced the factory OBC (next to the radio on the right) with a plastic panel and a VDO voltmeter that matches the factory instruments. Mount any gauge in the hole, it is a perfect fit, most people thought it was factory. The panel itself is in like new condition, includes all parts for the backlighting.
Great for a race car that needs extra room for gauges.
I will sell it for very cheap with the gauge.
I'll try to get some pics up soon. In the meantime, I drew a diagram here: gauge panel