The R32 Skyline debuted in 1989. It was available as either a 2-door coupe or 4-door hardtop sedan, all other bodystyles were dropped. The R32 featured several versions of the RB-series straight-6engines, which had improved heads (the twelve port inlet was gone) and used the ECCS (Electronically Concentrated Control System) injection system. Also available was an 1,800 cc 4-cylinder GXimodel. Most models had HICAS four-wheel steering, with the rear wheels being hydraulicallylinked to the front steering. The 2.5-liter GTS-25 became one of the first Japanese production cars to feature a 5-speed automatic transmission. The GTS-t came in standard and Type M configurations, with the Type M having larger five-stud 16-inch wheels, four piston front calipers and twin piston rears plus other minor differences. ABS was optional (except for the GT-R and GTS-4), mechanical LSD was standard on the GT-R and viscous LSD was standard on all turbo models and optional on all but the GXi. Nissan also produced 100 Australian models of the R32. In addition, there was a 4WD version of the GTS-t Type M, called the GTS-4.