[Q] Driver updating topic

I'm running a GS4 sgh-m919 phone with an insane kit kat 4.4.2 rom. The current adreno 320 gpu driver in this build is v45. I'm looking to keep my current android rom and just update the driver to either v84 or higher. I'd like someone to explain first if this is possible, then help out with a driver link and some basic instructions. Thanks.