Hi, the swept area of the blades of an 92mm fan (84mm blades, 25mm hub) is about 5050mm2. That's equivalent to a hole 80mm across, the hole in your case will be smaller than 80mm, eg a 74mm hole gives 85% of the swept area of fan.
I think a 92mm fan on a 92-80mm adaptor on an open hole will have better air-flow/noise ratio than original 80mm fan. If have any sort of fan grill/cover over the hole it will need to go!
I made adaptor to put 2x92mm fans in place of 2x80mm on back of my case and it definitely helped. The case originally had 1x 80mm fan so it's now "a bit hacked"