Hey Linus and crew. I have had this PC I bought from a guy on criegslit for a little under a year now. The PC runs great and all and plays games fairly well. 

Not that its relevant to my question for you but the specs are 

CPU amd 8350fx 8 core

gpu nvidia geforce gtx 970 4gb soon to be a rx 580 gigabyte

MB gigabyte ga 990fxa ud3

16 gb ram unknown brand and speed

power cx750m by corsair

and this terrible case by nzxt which i dont know what model but its older

and a corsair radiator cooler for cpu

The situation is I really need to change my look to this pc as it is a huge eye sore due to the radiator this guy installed on the outside of the case on the top. now why he did this i have no idea due to the fact that there is room inside to install it. But it is a little too late due to the fact he cut the top fan spots to run the tubes for the radiator to the cpu. On top of that he forgot the thing everyone forgets and that is the io shield for the MB on the back. This is not as major of an eye sore as its on the back but still annoying to see when im back there. 

     The question is I need to change cases bad, how do i find what case i should get, what components on the pc should i change because i am unsure how old they are and what should i know about taking it all apart and putting it into a new case? I have searched your videos and cant find one for changing cases. i know it would be the same as building a new one but with dirty parts and such what kind of precautions should i take and extra steps when taking apart and putting it all back together