POS coin with (100+ billion coins) Long Long instead of int64

[nice1013]

Hey everyone, I'm kinda interested in making a coin. I've been reading a lot and think POS is the better option. I want to know if there are any coins out there that are POS and have greater than 100 billion coins. A coin which allows for greater than int64. So i can fork from them instead of trying to convert to one. I would love to clone BlackCoin but I'm not sure if there would be conflicts switching int64 to long long. Been googling for a bit now. So any help would be great.