Well, the engine is the heart of every car, but probably most of all in a car such as
Ferrari. A Ferrari without it's small displacement, screaming Italian V8 or 12-cylinder would change the character completely. Like I never understood why people put GM 350 V8's into old Jaguar's. Sure, it might fit, but what a Frankenstein.
I'm sure Ferrari's won't have to wait a few years to feel the heat of the ZO6. If the power and weight stats mean anything, the 2006 model promises to handily outrun an F430 - most of the way anyway.
Another thing about the expensive 30,000 mile Ferrari service. Many look upon Ferrari engines as state of the art mechanical masterpieces - which they are, and then wonder why nobody else makes them like that. This is the reason. 'State of the art' comes at a price, and expecting the customer to fork out $8,000 for a periodic overhaul would not be practical for a high volume car manufacturer. Volume production has come a long way though. The LS7 for one, which is a combination of state of the art and tried and true, is a borderline race engine, and comes with reletively normal service intervals I'm sure being that it's a Chevy.