I don't know any more about the car in question except that Moldex Tool was reportedly involved with the project, but I did own the cylinder head at one point. Here's some pics I took of it. I sold the head without ever running it to a drag racing buddy who ran it for a while and said it didn't come alive until 8000 - 9500 RPM - too high for him to use. So when I built my copy I welded up the floors of the exhaust ports. It used valves from a 427 Ford FE motor.
This thing would have been easy to hide if it were illegal. From the outside with manifolds bolted on I would not have given it a second glance But one look at the thermostat outlet and you can clearly see the height difference vs a stocker.
