Well look at it this way...BMW had the 325/330(motors)..then it went 328/335(replacement motors). And didn't the 1st gen X5's have the 3.0 motor as the 330? I'm thinking that BMW will change the motor from the curent 3.0 motor to the 335 motor. BMW has a way of changing motors after the current models are out. Just my 2cents.

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2002 BMW ///M3 6MT - Alpine White, Grey Leather, Prem. Package, SP18 19" wheels (by.www.ccwheel.com, Umnitza DDE, 4 point harness(by SCHROTH)
1974 BMW 2002 5Spd Conversion fr. AT- Pastel Blau, 3.91 LSD
2002 BMW 325i /AT (wife's) - Steel Grey Metallic, 17" Hamann HM3, M3 lip spolier, Racing Dyanmics CAI
2007 BMW X5 3.0si TBD