Not familiar with the kc (dont want to bother looking it up either sorry) but a couple things to consider- don’t get a cheap round (you get what you pay for), make sure it has a proper cutoff beam (so you don’t blind oncoming traffic…you don’t want to blind someone coming directly at you and get hit) basically don’t use off-road lights/rounds/pods for street use.
You’ll need a bucket, some way to mount (cheap fork clamps or custom bracket) , the round and harness adapter (or diy). Wicked groms has the harness/h4 adapter
I went with a 5 3/4 round keeping everything to size- morimoto sealed6. You can look at my build thread for pictures/output and give you an idea on how I mounted it (a temp solution). Not a how to but hopefully gives some insight