[url=http://www.forgeworld.co.uk/en-GB/Dark-Angels-Legion-Heads-Upgrade-Set]You've got your heads - £11.50[/url]
[url=http://www.forgeworld.co.uk/en-GB/Dark-Angels-Legion-Torsos-Upgrade-Set]You've got your chest pieces - £11.50[/url]
And then the requisite MkII, MkIII and MkIV shoulder pads.