No, that's when you take the head off a VTEC Dseries and put it on a nonVTEC Dseries motor.

h:
As I said in your other thread, I think the Z6 is a good motor. It's the best Dseries (with the Y8) that they made.
I actually have a Z6 motor with a bad set of rod bearings in my garage right now. I'm going to be rebuilding it and selling it... maybe you'd be interested? Of couse, I don't know what you'll tell your monster D15 as you're ripping it out of the car. :rick: :db: