[Jfrahm]

I think to time the cams one-to-the-other you need adjustable cam gears (for the chain between the cams) or a belt conversion for the intake cam and two adjustable belt sprockets. Otherwise you only time the intake cam with the variocam fully erect and the exhaust cam timing depends on that. It's sort of backwards as the intake cam is a slave to the exhaust as it is driven off the exhaust cam, but the intake cam spec is what you shoot for.

As to what to do with custom cams, I'm not sure. You could superimpose the new profile on the old and try to adapt the factory procedure, with a different lift spec. If the new intake cam has more lift and duration it'd be pretty off if you timed it with the factory spec (calling for a particular amount of lift at exhaust TDC).

I would not expect an aftermarket cam sprocket to be needed, hopefully the adjustment range of the stocker is sufficient. If adjustment of the cams relative to one another is desired it would be interesting to consider machining and shimming the variocam unit to shift chain slack up or down.

-Joel.