Supermaxx Lightning here

FLM chassis don't have special places to mount switches, but if you can drill a 3mm hole in the switch somewhere, there are good places to mount them. The Novack switch works well that way. The Quark will be tougher, but it's just a switch, and anything similar should work. I mounted an antenna on the left side of the transmission, by using a longer screw to go through the case and into the antenna mount. I used both FLM and Gorilla battery straps - the Gorillas the long way and the FLM's the short way. It's on eBay now if you want to see it. You could also cut the battery trays out of a stock chassis and mount them, or bend a piece of aluminum into a channel, and use o-rings stretched across the top to secure the batteries.