Hi RaceLex... I got mine from a buddy of mine who doesn't usually deal to IS300s... just hondas & acuras....
So I don't think he'll be able to get you the part... I paid $600 for both front & rear lip... which was supposedly a "good deal".
So if you can repair yours for $200 back to perfect condition, that would probably be a better choice.
And you're right... I have totally betrayed ISI for TN.. Toyota Nation is where the action is
I wonder what happened to kurenai's car... he had the greddy lip but not sure if he was parting it out... he probably sold it whole though...