existenz2 on 14 November 2013
http://www.youtube.com/watch?v=u8_nt2Dwf78&hd=1
They put in an SSD, but it is the same process for a regular drive, just make sure it is 2.5" style and less and 9.5mm thick.
Personally I would advise you get this 1TB hybrid ssd, its more cost effective than full SSD and the speed improvement will be similar after it settles in..
Enjoy..
