I previously upgraded the 4 4in speakers with kicker KS (small improvement) then added the fusion amp and kicker sub (large improvement). Today with the help of the @RagnarKon video, I installed the last piece for me, the kicker key 200.4(kit 11)! Was pretty easy and I’ve never done any audio...
I added the missing suband used forscan to turn it on. I believe I got my info and possibly what you want here: https://www.bronco6g.com/forum/threads/how-to-forscan-audio-speaker-mods.71145/