Hopefully this is all the relevant information needed to determine whether or not it will work out and fit. If more is needed just ask. Thanks in advance for the help. Also, should I buy a separate thermal paste and apply that, or should I just use whatever comes with the cooler? Is it necessary to buy a certain brand?
Case dimensions are 19.61" x 8.43" x 19.53" and the HS is 122 x 92 x 160 mm (1 inch = 25.4mm) so 8.43 inches = 214mm so as long as the MOBO uses less than 214 - 160 = 54mm ( 2.12 inches) you should be fine !!
The Paste that coolermaster includes works pretty well but is pretty thick and hard to spread - so it can be used but you might get a couple extra degrees of cooling with Artic silver 5 or IC diamond paste.
Thank you all for your help. I was pretty sure it would fit but I didn't want to order it and find out later that it didn't so I had to make sure.
@WR2 I see...I just read through some of the other reviews and there is one in response to "Timmy L." that says the manufacturer of the case actually intended for the top fans to be mounted in that fashion. I'm not sure if that's true or not though.
Anyways, thanks again for the answers. I'll be buying the parts asap. Now I have to build it! Wish me luck haha.