Is it possible?
Just a new axle I think - X12 conversion kit rings a bell.
Just changed mine but it wasn't an evo.
Evo is just end cap change I think. Old pro 2 needed a new axle, evo has only 2 axle options, 10mm bolt in and everything else.
You only need the end caps, X12 variant (12mm is for 12x135), items 28 and 29 in the diagram:
* unless you have the 10mm bolt in axle, in which case you will also need to change the axle as well 🙂
As it's an Evo - just the end caps need changed. X12 or 142x12 should refer to the same adapters and will do what you need. (Edit - as above 135x12 is something else)
The non-Evo pro2 needed the axle. The change in the Evo was it came with a larger diameter axle to start with.
http://www.chainreactioncycles.com/hope-pro-2-evo-rear-hub-conversion-kit/rp-prod68578
X12 conversion kit. Just the end caps that change, unlike my Pro 2 which is Axle as well.
Nice one chaps, that could just tip me over onto the buy button! 🙂