I used the Chapterhouse conversion beamer kit - which isn't available anymore. This is a shame, as there are no readily convertible bits available to make a MotF from GW (at least not on a bike).
The saddle bag is from the Dark Angels Ravenwing upgrade sprue, and the bionic leg is from Kromlech. Still have several of those to incorporate into the remaining infantry.
All decals are from the GW decal set - very nice, high quality decals.