[1.8] BakedQuad Texture Modification

Hi, as the the title says, I'd like to be able to modify the texture of a BakedQuad from a model. Is this possible with ISmartItemModel? Can I replace the whole model's texture? I am asking because I am doing some work with ISmartItemModel and I need to be able to modify a model's texture (the model contains only one BakedQuad, as it is a replica of the vanilla player arm). Any help is much appreciated, if you can explain if this is possible and which class to use, I'd much appreciate it. Thanks.