The LS430 first appeared in the UK in Oct 2000. It came as standard with conventional suspension, with air suspension added as part of the £4k premium pack, which also included the rear cool box, rear electric/massaging seats, rear air con zone and controls, air con front seats and wooden steering wheel.
The facelift LS430 went on sale Nov 2003 with a 6-speed transmission. Air suspension was standard - essentially the spec increased to include all the premium pack additions.