Isn’t that a Victor 883? Are those even legal? 
You are correct, that is an old 883. We used the older ones we had laying around to hold the place of new 888’s while we waited for them to arrive.
Your 12-volt-to-5-volt converter is miswired. It needs to be powered from the dedicated boosted 12 volt output on the Power Distribution Board, and you instead have it wired to a regular 20 Amp branch circuit.
Other than that, I think it looks very nice.