I modeled this shield after the the dimensions of the motherboard. It fits perfectly on the board and in the case. It is a bit bigger on the ports opening than the original metal one but it still looks nice and quality.
I have made it after the X99 WS, but the Extreme 6 has the same IO so it should work
If you decide to print it use something more heat resistant like ABS/ASA.
Printed on a Bambulab P1S with ASA at 0.24 height
The author marked this model as their own original creation.