When the LS came out in 90 it shares everything but some high end option only in Japan such as the tv ,rear seat controls for the radio and heater, reclining seats, cloth seats was the main option even on the "C" model, rear reclineable seats as well as the driver being able to move the passenger front seat forward and reclining the rear seats with buttons by the ashtray .
The North American market finally caught up in about 2001 with the ultra cars.,