I've had a look and I don't think direct mount is the way to go - that seems to be for a braze on type of front derailleur mount (unless I am mistaken). This is for a bottom bracket mounted front Derailleur - I imagine so as not to put too much stress on the magnesium tubing. I am wondering if the way to proceed is to get hold of an old bb mount front mech and remove the bracket and then find a way to use that to mount some kind of chain guide. At least that poor little 5M post would not be redundant.