I dont think the grille off a 2003 x5 will fit your 2004 x5,otherwise we would see a lot of us with pre-2004 x5 with the larger grilles............as these look much nicer!What is the Ebay item no.that you won?It should say there that the 2003 grille will not fit a 2004 X5!
Regarding the chrome fitting for the lights,I personally think it spoils the car and I dont believe any one here has them!!!!!!!