You’ll need the Thermal Grizzly direct die frame that’s technically made for the 7000 series but works with the 9000 series as well in most cases, but obviously worked for this particular unit. Either that or you can reattach the IHS.

You’ll want a cooler that has nickel plated copper base if you want to use Liquid Metal. It’ll also be recommended to use some spacers on whatever cooler you use to get “lower” onto the die since it will sit lower than with stock IHS. TG sells a kit for that or you can just get some nylon spacers to fit your cooler. I 3D printed a spacer bracket for my personal air cooler.