According to spies, Ferrari is using the not-yet-released Challenge Stradale as a test mule for the next-gen F430. Wait around the company's the Maranello HQ long enough and you may get shot at, though you may also see one of these specimens rounding the Fiorano test track. Some insiders hint that the company could upgrade to a 5.4-liter V8, making it an, er, F540? Either way, we'd imagine the pull to increase horsepower into the 500s must be great. But whether or not Ferrari would compromise the F430's delicate balance to win a concorso d' pissaggio remains to be seen.

All new Ferrari F430 Spy Photos [World Car Fans]

Related:
More Ferrari F430 Magic [internal]