Default [Q] kit kat upgrades nc2 or nc5

Have rooted different phones many times, but keeping up with all the different builds is getting hard and what is possible. Recently on my Galaxy S4 went from the original MK2 build and rooted it and went to the sneaked NC2 build, Was going to go to the NC5 build and or put hyper drive on it, but the question that I have is, once a phone has rooted and NC2 installed, Does all future roms relate to the latest update . For instance if I install hyperdrive on my galaxy s4. Do I consider it a Nc2 build or the original mk2 build? I ask this because it seams everything reverts back to the original locked boot loader from when the phone came new from the factory, I get confused when you follow the instructions to install a different rom and its stated that this rom is for the mk2 when in fact my phone is now a nc2. I ultimately want to get the hyperdrive installed on my phone that is a nc2 that was upgraded from mk2