So, we were working on the gauges and CAN bus integration, and figured it would be a lot easier if the engine was running. And thus a large noise came out of a small car, and it was good.
More information on this car at https://www.flyinmiata.com/V8/ND/
Some of the gauges are working now, and more are coming online all the time. Flyin' Miata is currently a very happy place.