Looks like a pretty slick package. The actuator is riding on the guide so a retrofit to a vintage engine seems plausible . . .

My first question is how to cool the exhaust valve? The test mule mentioned on the site had these VVT units on just the intakes. The second is how to lube the valve guides?

Also it would seem that the area under the valve cover would need to be kept dry - absent crankcase vent gases and no oil splashing about . . .