In reply to ffati:
Hello,
So the new plum bindings (last season and this) have normal, backwards facing brakes which is great (link below). As I have the older, brakeless model, I emailed them last year to see if I could just buy the brake separately -as it looks just a modified version of the normal heel binding plate. However, according to them (I have copied the email below) it is apparently not a direct swap, but if I sent them 114 euros and my current heel plates, they could do the mod for me. I have not yet taken them up on the offe, but it could be a solution for you.
Best, Nick
http://www.fixation-plum.com/nos-fixations-guide/3100-guide-m-stopper.html
Copy of email:
Hi Nick,
Thanks for your interest,
The new stoppers couldn't be mount so simply on your binding.
We don't sell this product separatly.
The only way is to send back your pair of heel piece to the factory with a 114€ bank cheque to Felisaz SAS.
We will make the modification directly and only in our factory.
Then, we will ship back the updated product to your adress.
Thanks
Cordialement/Regards
Gaël ARMAND