As far as I'm aware no.
You have to change the whole front end to the later B8.5 spec, bumper, grill, headlights, bonnet, obviously the fogs and surrounds, and I think the wings also.
Use the search function as there's a couple of guys that have done it, I know one is "My S4 project" in the B8 S4 section which is a damaged repairable B8 Avant that gets the B8.5 treatment on the front end.