Here it is the Hi-lift Jack mount, directly mounted to our Alpine - Coast roof rack.. 
Stainless steel inc all hardware.. we can even supply with a stainless steel rope lock too. 
Please note these mounts can be fixed to any flat surface using the two m6 holes.. (designed to be side hung) 
After testing on & off road we managed to remove a lot of rattles with the rubber 3D printed inserts.. but the head off the Jack it’s self has a fair bit of movement which is overcome with a simple bungee ball or similar to eliminate 99% of noise.