I really like the 4.8is front grille but I couldn't justify the cost to have the hood, fenders and so on replaced on my 2000 X5. I looked on how to retrofit an pair of facelift grille on but it's not an easy thing. The grille is bigger and it would require a cut in the hood and that's a bit crazy.
The other option is this link below but I am not sure about the look being much better than the stock. Any comment are appreciated:
BMW 00 01 03 E53 x5 Black Chrome Front Grill Grille C9 | eBay