The Shrine

I think fake Naruto and Prince of Tennis info has become something of an art form, both on the Japanese and Chinese forums. There used to be entire fake arcs going like the Itachi the double agent arc with someone actually drawing for them. Currently there's a good list of the fake chapters that seems to combine the best of manga drag-ons and anime spinoffs. Some choice chapter names in the fake arc starring Sasuke vs Zetsu, some of them sound like they could be real!

Note that the current manga is at part 394, and Zetsu is the same character as 'absolute' in Chinese

Chapter 395 - Absolute Power
Chapter 396 - Absolute Illusion Seal
Chapter 397 - Kaledoscope vs Kaledioscope
Chapter 398 - Invinicible Kaledioscope
Chapter 399 - Nine Tails Berserk
Chapter 400 - Red Wind Spiral?
Chapter 402 - The last Lightning Cut (Kakashi's version here)
Chapter 404 - The 8 doors opened (Kai)
Chapter 406 - Goku returns
Chapter 410 - Assault on Kingdom of Fire.
Chapter 413 - Sasuke in danger. Zetsu's counterattack
Chapter 414 - Sasuke is dead?
Chapter 415 - Luffy vs Zetsu
Chapter 421 - Kobe Bryant vs Orochimaru. Which snake reigns supreme?
Chapter 423 - Bankai vs Devil Fruits
Chapter 429 - Light Yagami. Ultimate deduction.
Chapter 439 - Goku's last stand
Chapter 441 - Death Note: Six seconds to counterattack.
Chapter 448 - Death of Masashi Kishimoto (the author of Naruto). The end of a legend.
Chapter 449 - The last counterattack
Chapter 450 - Finale: The Last Spirial.

So it looks like the fake Sasuke arc will span 55 chapters with very little to do with Sasuke or Zetsu. Actually, some of this seems almost like it'd be more interesting than the real thing.

Rather pointless without

A) Access to said chapters
Translations of chapters

Well, someone is usuall providing the summary to the fake chapters, and occasionally someone will even draw it, but I don't think anyone does 55 fake chapters ahead of time.