Although these are labeled FKX PRO's, they are really the same thing as the FKS bindings. The DIN range is 5-14 on both the heal and toe piece. After hearing that deep scratches in the pole release area can interfere with the DIN indicator, I completely filled in the spaces with a colored epoxy just to be safe- the scratches really weren't even bad.
The brakes are 80mm and are off a newer pair of FKS bindings, so they are not brittle like the ones that originally came on the bindings. I would suggest bending them without heat if you are putting them on anything narrower than 95mm, but if you want to go wider than than, I would use MAP gas. I have done multiple pairs with and without heat, and it really isn't hard if you have a few tools and common sense. This post does a pretty good job at explaining how to do it with heat: http://images.media.nscdn.com/ns/forums/readthread/thread_id/392552/
A good video on how to assemble/disassemble the bindings:
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