I have been seeing the stylinconcepts site and I think that it is not so dificult to do some adjustable cam gears for the A series engine. If you get one of this adjustable cam gears (for other model, but with the same diameter and teeths of a A series) you can always machine it for fiting the end of the A series Camshaft. Other way to do it is getting a stock cam gear, machine it and develop a similar system.

What would be the pros and cons of such a modification? Can you pull up the power/torque in a significative way?

I think that it will be much more efective on dual camshaft engines, since you can change valve crossing (I think this is the name).

Thanks

Ricardo.