LMFAO! (Sword6919, three of these words are Laugh, My and Off - you can suss the rest I'm sure)
US dealers may not have access to the General, Europe or Japan EPC CDs. Also, Toyota dealers won't have full access to the Lexus parts of the CD - they need a password.
Your info was gleaned by going into the EPC and searching the Europe and General discs in turn, looking for the part number you quoted. Once found, the part is shown, along with all the cars it fits (only the LS400 RHD). I then searched for "Spiral" on the Japanese discs to see what the equivalent is on the Toyota Celsior (different part number) and also the USA discs to find the equivalent on the US LHD cars (also different part number).
All of my EPC discs came from P2P file sharing. My current collection is:-
European A1 June 22, 1999
European A2 March 23, 1999
USA A1 July 29, 2003
USA A2 March 27, 2003
General A1 December 19, 2003
General A2 December 19, 2003
General B1 December 19, 2003
General B2 December 19, 2003
Japan A2 December 15, 1995
Oversea F1 December 16, 2003
Oversea F2 December 16, 2003
All running under EPC V1.00 for Windows 98, which runs quite happily under Windows 2000 (if anyone has V3.02 I have a Lexus crack for it).
Still downloading others as I write (including Japan A1 so I can get the Aristo parts catalogue) - trouble is, most of the discs out there are older than their filenames claim!