How many games are for Kingdom Hearts on the PS2?

I have these games for the PS2. I have Kingdom Hearts,Kingdom Hearts II, and Kingdom Hearts Re:Chain of Memories. Personally I don't enjoy Kingdom Hearts Re:Chain of Memories. It has invisible walls, and they took away the exploring around, and replaced attacking with cards, now they have the same battle system as Final Fantasy, where they have a break then go to a battle field. So is there is such thing in the United States as Kingdom Hearts Final Mix, Kingdom Hearts II Final Mix? And they don't sell the Final Mix in any Game stop around my area in Burbank. People, do you know where I can get this game for the PS2?