[Q] Help with newly root SP topic

hey fellow xda ers. i just recently rooted my sp using the doom lord easy rooting toolkit. i was wondering if there is anyway for me to get stock kitkat onto it as im a bit confused as to what to do and what i need in terms of software. i currently have a
sony xperia SP c5306 .284
its rooted with SU
i have twrp installed
im not sure what i need to do to get stock android on it and the sites i found used cwm. ill keep adding info as you guys need it. any help is good help. Thanks in advance
~NUA