I agree with previous post, I mean if you are dont want the Pimp My Ride look, then get 4.6i or 4.8 kit, If you have pre facelifted 2000-2003 X5 then you will have to go with 4.6kit, other wise if you have 2003 or above get 4.8kit....also go with the following
OEM Replica 20" Rims and Tires (Go with AFS Wheels on ebay,

http://cgi.ebay.com/ebaymotors/AFS-B...28298781QQrdZ1)


4.6is Body Kit: if you want to skim on the cost dont get the 4.6 flares, just get front and rear pieces: You will need the part numbers listed below
51-11-7-062-604 COVER
51-12-7-062-601 COVER
51-12-7-062-599 COVER
51-12-7-062-600 COVER
(All parts unpainted $530 from morristownbmw (contact info is below), and then $250 or so to Paint)
Aluminium Running Boards ($500 from morristown bmw, contact info is below)
Clear Out your headlight, by taking Amber portion out of side and install angel eyes if you dont already have.

BTW just found out about bmw dealer in north east who will beat any others bmw dealers prices and yes that includes even the praised "Crevier BMW and Pacific" of California(they are trying to make there presence known on internet). So if you dont live in Cali and are going to be ordering as opposed to local pic up then go with Nick at MorrisTown BMW, they can get you any OEM Part you need at rock bottom price
Nick of Morristown BMW
His Contact info is below:
[email protected]
973-451-0009 x114

Let him know you heard about him on X5world forum!!!