Hi there. It's not a Lexus but it shares pretty much everything mechanically and suspension wise as a GS430/GS450h. It has a 3UZ-FE and 6 speed auto.
I've joined up to lurk around and search for performance goodies that may fit. Currently I have a full set of Megan Racing/Hardrace adjustable suspension arms fitted and an airbag height controller.
Next mods I'm looking at are exhaust and intake upgrades.
Cheers Brad