Sager NP9370-Fan Replacement

So as I do every month I was cleaning my laptop today. The fans that come with the laptop seem very cheap and not very efficient too. My question is, are there better replacement fans for this model laptop, OR can I get the specifications of the fans inside so that I can just replace the blades/motors and keep the fan housing?

I've researched all three fans and with their model numbers all I can come up with are were to buy replacement fan units. Below are their Model Numbers:

AB7805HX-BB3...

Sager NP9370-Fan Replacement