Headers on Challenge Stradale?

I'm in the process of building a Ferrari Challenge Stradale, and the engine has me stumped. I know the Stradale has more power than the modena, but where does the power come from? Does it have different headers? Intakes? If any of you Ferrari-philes out there know, any info would be greatly appreciated, pictures also help

Thanks in advance.

if the block is the same the h.p. will come from
bore,stroke,rods,piston and cam's
the header's really dont make that much h.p.
maybe 5 or 10 h.p. more

The Stradale just has better flowing intake and exhaust designs for it's increased performance gain.

The only visible change is the air boxes and runners leading to the engine.

I have some pictures from a Ferrari Challenge car, and on that one the exhaust system is altered from the catalythic converters and backwards, otherwise it's the same as on the road car.

Niclas
http://images.fotopic.net/?id=5010876&outx=600&oq=0
There is more pictures of the car here http://niclasproos.fotopic.net/c200494.html