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Re: your search for a 330Ci Clubsport, here are pre- and post-facelift pics of E46 Coupes for you to compare, the dark blue car being pre-facelift, the silver car post-facelift:
FRONT:
Differences - post-facelift car has wider kidney grilles, all in one lamp units with HIDs and upswept teardrop lights, revised lower airdam and wider bonnet opening.
REAR:
Differences - fewer changes here, just LED rear lamp clusters and a revised rear bumper.
Anything with yellow indicator lenses (front, side or rear) is DEFINITELY a pre-facelift E46 Coupe.
Don't worry about people doing their own facelifts to pre-03 cars, as although it is only a bolt-on job, to facelift an older Coupe, you'd need the bonnet, two front wings, two new kideny grilles, two lamps clusters and a new front bumper, and as you can imagine at BMW prices that is NOT cheap!
As I said in the PM, I think all 330 Clubsports were pre-facelift, but I'm not 100% sure...