Thanks for your insight.
I was thinking more into 'removing the stock fans and plastic cage', and fit rad+pull fan.
There are lots of rad+fan combos. One of them, I think that is pretty okay is the gentle typhoons 1800RPM fans + MCR320 Rad combo is about 60mm which is slightly more then 2inches. This will allow you to have a 11+ inch GFX. *Assuming you remove the stock fans and 'cage'.
You can also have add a 120mm rad+fan installed above at the top exhaust of the casing into the loop.