1.8 SX: ST163All-Trac/GT-Four: ST165 Toyota Celica Convertible ST162 For the Japanese market Toyota introduced the "ultimate Celica", the GT-Four (ST165) in October 1986. With full-time all wheel drive and a turbocharged version of the GT-S 2.0 L engine producing 190 hp ( 3S-GTE ), it immediately took its place as the flagship of