Only way these would work is in a carbed or TBI motor where the fuel and air mix long before it gets to the cylinders. Newer motors, for the most part, inject the fuel just before the intake valve. This kinda works on the same level as a carb/TB spacer. They worked well on carbed motors, not so much on modern motors. For us, we'd need a spacer between the plenum and the heads. Even then it would probably be a minimal improvement. Can't wait for a centrifugal supercharged for out trucks come out. Roots type is ok, looks meaner, but you can stick a bigger intercooler in front of the radiator than you can under a roots type supercharger.
On topic again, Land O'Lakes is known for butter, not engine parts. Probably some USF drop out figured this one up. About 15 minutes from my house, might need to swing by and see if they'll let me play with one.