I have the rack on my LR3.
There are 4 metal plates with two threaded rods on each plate. Those plates are cut to fit into the rail system that is on your roof. You may be able to substitute a Yakima Landing Pad feet set that fits our rails and modify that setup if you have no luck getting the hardware from LR.
The front portion of the rack that over hangs above the sunroof, there are two feet that mount to the rack and to the roof. The two rubber strips on both sides of your roof, under that strip is where the feet fasten to. If you got those feet with the rack then the hardware should not be difficult to find. Metric bolts.