Trek/Bontrager freehub replacement

[radam]

I have a set of Trek/Bontrager Rhythm Comp wheels. They are currently setup with a 12x142 rear axle with an XD driver. I'm considering switching to Shimano.

The hubs look like this:


And the current XD driver body looks like this (but with the 12x142 end caps)


Can anyone tell me what part(s) I'd need to make the swap?

[Eluder]

You'll have to get it from a trek dealer. You need free hub body and end cap kit. retail on the free hub body is $100.... Im sure you know but you can run Shimano with a Sram XD cassette.

[radam]

I was trying to make the swap with 10-speed Shimano, so I don't even know where the cross-compability stands in that scenario. In any event, $100 for a freehub is too rich for my blood. Just going to leave things as is.