Hello ThreeDee! Hope youve been well. I came across your post around using the H80 cooler for AM4 then signed up with the forum. I dug into my old boxes and found the two piece square bracket that only had two exterior screw mounts. Is that what you used? Did it fit with no other modifications? I believe you just had to install the two plastic brackets that comes with AM4 motherboards? Thanks for your time!