Changing myplayer cyberface arms only? with default head?

I have tried changing myplayer cyberface and edited the arms with the tattoos i like but i wanted myplayer face to be unique. Since i have searched the whole site and found nothing. Is it possible to just to replace the arm of myplayer and not the face? since there is no cyberface iff generated for myplayer. The thing is i just wanted to put sleeve tatoos and etc. at the same time change the hair and facial hair from time to time. Can anyone help me with this? Thank you.

I'm 99.9% sure you cannot edit arm textures of generated cyberfaces.

Well i can edit the arm textures of player cyberfaces in the default rosters. But not the ones generated on myplayer. which i may add i can't find the pngXXXX for. maybe it doesnt exist. idk. and i cant find anything that decompress the .CMG file maybe ill find something in there. The only thing i can think of is editing the arm texture of a specific player i.e eduardo najera png0838. And then edit just the arm then maybe delete the rest so that the arm is the only thing imported back to the cmg file hoping it will use the same face so that you can still edit the face hair etc ... <---- which i know is impossible and cannot be done because of the 3D model is diff. But i hope you can get the idea of what im trying to do.