i think it is a waste of time and money. it is not as easy to swap gpu hsf and gpu gets outdated fast.
so just buy a gpu with a ready made custom cooler if you find the default blower too loud.
What's the issue with the cooler on the card you have? FWIW though, it would have been a lot cheaper just to buy an ASUS card to begin with.
From personal experience, I'm not fond of the stick-on ramsinks you need to use in conjunction with aftermarket aircoolers. They tend to fall off and can't be reused easily anyhow.
The cards run a little too hot and too loud for my liking. Besides, I have unused Amazon credit I just want to use already.