Bigger chests possible?

[Guinaro]

I like the ironchests mod, since it has bigger chests up to 108 inventory slots. But I can only override each chest with a texture and recipe.
I would love to have multiple chests of the same tier like a 108slots chest in Ruby, Peridot, Sapphire, ... . So many chests of identical size but different texture.
Is it possible to allow bigger chests in customitems aswell. Codewise compact storage mod can allow a lot more.
CustomItems chest are codewise capped at 6 x 9, can we up the limit to 12 x 9 or even more?
I hope it is a simple as to increase the limits inside the code.

Thanks,
Guinaro