I port mobile legends and lol models to gta sa.
Converting an file to dff, isn't so easy as you think. First you need to resize your model to default dff. And then you have to repose bones of dff to fit to your model. And you have to set the weights aswell. So it takes aproximately 25-40 mins depend on your model. So it's not something you put the all files together and convert them for your purpose. And unfortunately, you can not use 3dsmax in mobile either. So i can't convert the skin you want that easily. Sorry.