Help where to find sirens

[Killer64]

Ok, I got past the evil wall and now I am at the end of the game trying to figure out a way to beat Zeromus. Currently, my guys are at levels between 55-58. I found out on a GameFAQs post that you can use sirens on the moon to fight red worms to gain a lot of experience. They said that you can buy sirens in the Hummingway cave, but the problem is that is in the DS version. They do not sell sirens at all in the playstation version. Is there a way where I can find sirens easily, or a better way to gain EXP points?

 

[Ilyena]

A good way to gain EXP is either going to the Bahamut cave and fighting monsters or going into the final dungeon and fighting the monsters on the Lunar Path. As far as I know, there are no Sirens in that version of the game.

 

[Killer64]

Ok, since that's the case do you know the easiest way possible to beat the monsters in either Bahamut`s cave or on the Lunar path? I just tried fighting him again, and lasted a little while by casting Cure 4 with Rosa every turn but when she got KO`ed the battle was basically lost at that point. I am thinking of just going up about 10 levels then trying again, I had to do the exact same thing with Final Fantasy V in beating X Death.