The registry check out as a 2004 Lotus Esprit, with a 4.4L displacement. The Esprit never had anything that big, and there is no Toyota V6 that is that big. There is a GM unit which matches those numbers, as well as a BMW V8, which was the rumored powerplant for the Esprit successor before Mike Kimberly called it a tractor engine.
The registry numbers don't coincide with any other Lotus test car seen yet. Other than the info gotten at the Hethel anniversary weekend, there isn't much to show this as the Project Eagle at all.