266mm brakes under volcane wheels

[Chris_90]

So looking at a brake upgrade for the zx, as it'll need discs and pads before mot. I don't want to get rid if the volcanes for 2 reasons one being I want to keep it original looking out side, and 2 I've just fitted 4 new Michelns not long ago. 

So I know it's extremely tight under the volcane wheel but is it possible to fit the 266 brakes under there and if so what needs doing to get them to fit? Will I need spacers?  

Thanks in advance