Don't know about S. Cal but here on Long Island, NY there's now a 2-3 month wait for ordered 4.8's. I understand the factory has increased production of 3.0's which negatively affects lead time on 4.8's.

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Porsche 996 Turbo (Ruf 550)
Porsche 993 Cab.
Porsche 997 GT3
Audi A8
BMW X5 4.8 White, Black Napa, Sport, Technology, Premium, Prem. Sound, Cold Weather, Rear Climate, Multi-Contour, Sirius, HD Radio, Running Bds., Bamboo