well, i considered that too but long time ago. the 4.6is kit cost around $700 and geting it painted is about $300, so its a $1k mod. i dont drive my x that often anymore since i mostly spend on modding the 530i. for $150 and $50 paint, i think its nice to have something new on the x but not too expensive. i already spent a lot on the x 2 years ago. thanks anyway.

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2002 X5 3.0 Siena Red
Premium, Cold Weather, Rear Climate Packages, 19" Wheels
Aluminum Running Boards, Clear Tail Lights, Clear Side Markers
Titanium Kidney Grills, Titanium Trunk Lid, Xenon Headlights
4.6is X5 exhausts, 35% Tint, Aluminum Pedals
2005 530I Mystic Blue
Premium Package, Sport Package, Xenon Headlights
18" Sport Wheels, 35% Tint all around
Mods to come: M-Tech Front Bumper, M5 Side Skirts, M5 Rear Bumper
Quad Exhausts, Style 172 19" Wheels