Or with hacking other games ^^'
I care about LoD, but since I'm already on FF9, I can't help.
I only remember having hacked the memory card files for LoD. It was quiet simple and I think you'll find some things about the statistics by looking at those files first (they're always simpler to understand since there is only a limited amount of information and you can figure the meaning of most of them).
For instance, it is quiet possible to equip whatever combo you wanted to whatever character, resulting in weird animations of the 3D models. You can then figure how animations are coded, directly moving the model's few bones and allowing a great variety of animations (the same animation is never used twice in the post-battle cutscenes).
In short, I'd recommend you to first look at memory card datas ; you'll surely find several things and, with any luck, you'll then be able to link some of them with whatever you're searching.