I added the Quadra big foot to my toy hauler. It was one of my first mods.
I purchased my two cylinder kit right from the manufacture in white pigeon Michigan. They can also do the install. They have a huge shop that accommodates several big rigs at a time and their installers are all experts.
My cyclone has hydraulic front lifts and for a little extra I could of had and automatic level button. But I like the manual leveling from the left/right rear control box I mounted in the garage on the wall
The procedure is simple. I pull into a spot and while I’m still hooked up I lower the high side foot until it makes contact. Then lower the low side foot until it raises the rig level left to right. It’s still on the hitch so I’m not twisting the frame
I then raise the front and unhook
I can raise one side at a time for tire changes
I ordered the frame brackets and after gaining access to the frame. Clamped each bracket and drilled six holes on each side. It was a fair bit of work but I took my time running the wire cables and added a battery shut off switch.
It was a lot of work. The guys at Quadra manufacturing know how to weld the brackets to the frame and have all the materials and tools to get you in and out quickly. They could probably do the jack install and let you finish the wiring if you needed to remove panels to run your control box yourself
It might be worth a trip to the states. They are located in farm country and there’s at least two very large new and used rv parts supply companies close by with boxes of any part you can think of on an rv