Well I decided to light up my HPI 5SC finally. I used all KillerRC components including their 6 LED light mounts. I drilled those onto my rear bumper but even with the guide sticker I was off slightly. In any case I got them on but highly recommend drilling a small pilot hole first. It may help you keep a straighter hole than mine. I had to buy a Rovan front bumper with pods to replace my 5SC stock bumper. Mounting was very simple and installing the LED's into the pods was also straightforward. KillerRC sets fit perfectly into the pod as long as they are centered correctly using the guide hole to line up with the relief in the pod face and the LED housing. I could have fit everything into my stock radio box but I went ahead for simplicity and ordered the extended box lid as well. its much easier to fish your bare wires into whatever hole you use to enter the box before you install your futaba connectors. In the future I have ordered a new box and will probably drill and grommet new entry holes and reinstall my Killer Bee LED and buzzer. One thing about the extended box is the lack of plug for charging the battery pack. If you go this route it might be helpful while installing to fish a new charging wire outside the box.
Also went 4 Channel Futaba on both trucks. I installed new LED pods on the Loose rear bumper that fit very nicely and no drilling or glue needed. This truck has an older KillerRC Kontroller v2 so i am missing a couple of flasher modes.