not sure what exactly you mean, firstly, sr-2 isn't the name, is a small piece, and second, if you mean the computer case or tower, then you just want a case that is full or mid tower, possibly some of the other styles, depends on the mobo as it will be either ATX or microATX, but a mid or full tower will almost always fit both unless it's a pile of crap case, if in us look around newegg.com, uk is overclockers.co.uk, auzie is pccasegear.com