1999 for Lexus GS300 Base Sedan 4-Door 3.0L 2997CC l6 GAS DOHC Naturally Aspirated. 1998 for Lexus GS300 Base Sedan 4-Door 3.0L 2997CC l6 GAS DOHC Naturally Aspirated. 2000 for Lexus GS400 Base Sedan 4-Door 4.0L 3969CC V8 GAS DOHC Naturally Aspirated.