My $2. Think the whole thing boils down to is VVEL. That is a bag of snakes that the aftermarket does not want to get into. Not enough money on return from investment. They are only going to go so far for the most dollar. If our engines did not have VVEL. Think you would see cams out there for it, and other stuff too. Right now, we have 2 software companies working on VVEL (UpRev? and EcuTek?). BUT no other companies that make the hard parts that go with it. So, until that happens......................nothing of importance. Just more shifter knobs.