Fyre Festival creator Billy McFarland is guaranteeing Part II will be everything the initial event was supposed to be, but thinks some tweaks in the entertainment department are due … so he’s asking 50 Cent to replace Ja Rule for the next go around!!!

It sounds insane, but Billy’s telling us he’s 100% serious and already has hard dates lined up for April 25, 2025 in Mexico — stamp your calendars and passports!!!

Check out the vid … Billy says it’s gonna be a real-life utopia … the musical act will be an afterthought amid plenty of white sand activities: scuba diving, sunbathing, live karate fighting, hello?!?

If you’re still a nonbelieving ninja, Billy says the island they rented already has 3,000 people who already made their payments to experience paradise.

Of course, anyone still skeptical about Fyre Festival 2 has sound reasons … Billy served a little under 4 years in prison after the historic collapse of the first one … but he’s hellbent on making the new one work.

Billy also sends a shot toward his former co-captain Ja Rule, and invites 50 to assume his place in the Fyre empire.