Dear 001,
Lexus sent me an email today with this info on the 2007 SC Pebble Beach edition - interestingly it did not mention the engine size, and was in the same email as the announcement of the 2007 GS350.
"The ultimate getaway destination deserves the ultimate escape vehicle. The 2007 Lexus SC Pebble Beach Edition. Offered in a unique color combination with exclusive badging, this SC special edition is available in a head-turning Starfire Pearl exterior and a unique Pimento Red leather interior. Finishing the limited edition package are two sets of black Lexus floor mats branded with a distinctive red Pebble Beach logo.",
D