Precision Porche sells the sideskirts, as well as some other companys.
This is the GT2 front bumper with the "race" lower lip, or as I like to call it, the snow plow.
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2000 Porsche Boxster S - Evo Intake (w/ Foam filter - no MAF probs), Precision Porsche GT2 front bumper, T/A sideskirts, Carbon Fiber Hood(temp removed), LED Taillights. 73k and still kickin.
[Also post under the name PoPo]
http://img141.imageshack.us/img141/641/grille9vq.jpg