The guy in the video specifically said it is not supercharged.
I see a supercharger on the pic........
There is a supercharged version also.
I can't watch the video at the moment, but that really looks like a gear-driven supercharger on the top of the engine, under the carburetor.
Did he explain what it was?
The one in the video #1 is obviously not supercharged. It’s just carbs on a intake.
Video #2 shows a supercharged one. You can tell when he revs it, it really is a roots on top. Notice how much quicker it accelerates when he blips the throttle, than the carb’d version in video #1. You can also hear the blower wine, ever so slightly.