actually I'm not sure what the radiator supports really are, but I can tell you the only thing I had to do is shave off a strip from the styrofoam bumper cushion that's mounted behind the bumper (about 2" high and about 1.5" deep with an exacto knife) so that the inner plastic shape of the GTI euro bumper would fit onto the rabbit front (bought the bumper from parts4euro.com for $459 and it came with the grille and inserts. Other than the styrofoam cushion I had to tape up the blinkers (to be water tight) because the euro gti bumper doesn't have blinker inserts and the foglights in the bumper that came with it are just there for looks, they are not hooked up to the electrical.
