The kit from Lamonster came today and I took it straight to the garage.
Instructions that came with the kit was good and easy to understand, so wtg for that Lamonster.
Took me a small hour to get it done and here are some pictures:
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Only thing I did not do was removing the panel underneath. But I cut out a section of it tho to see if I later on can make something on my 3d printer that will function like
one of those vents that create a vacum as air flows by on the outside.