Finally did it myself 2 days ago. It took nearly 1 hour to finish. Just have to remove front bumper cover (Black part) then replace lower grill.

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E70 MY08 3.0si Space Grey, Sport steering wheel, Titanium Grill, Titanium lower grill, Sidestep, and more to come

E60 MY05 525i SE Silver Grey, M5 mirrors, Hartge Classic II 20", Eibach Spring, M Sport Trunk spoiler.