those look more like the hardware for connecting things TO an extruded rack rail, rather than a rack to a roof. Does the LC80 have integrated rails set in the roof, that a rack is attached to?
As rayra says, looks like the bottom of those, with the square that snugs up when the nut is tightened, fit slots in both the Frontrunner and Rhino-rack type platform trays. The top config? No idea.