Finally figured it out!! Prototype underway!!

Matt,

So you meant you have seen 100 + engines with VVT. Not 100 + different designs. I should also add that in general most VVT is showing up in multi cam engines. The reason being that this allows overlap changes which we will not have available with our single cam engines.

We all know that retarding and or advancing a cam index will move the power band and response over the usuable RPM range of any engine. So while you may not have the flexibility that VVT offers with multi cam engines, hopefully dyno tests will offer improved drivability and streetability for more radical cams and or offer a bit more top end power for milder cams.