||Only Turbo Spec R models can be imported and complied in Australia. The Spec-R differed from previous Silvia models by featuring a 6-speed manual transmission. The Spec-R also included extensive chassis and suspension strengthening via the use of larger anti-roll bars and strut bracing. The S15 featured the same 4-piston front brake calipers that were found in the S14 but included a larger brake booster. One of the biggest changes to the S15 model of the Silvia fitted with the 6 speed manual transmission was the implementation of a helical limited slip differential. The result was a safer, more track suited drive; in some contrast to its drifting heritage and subsequent media attention. All other versions of the Spec-R came with the viscous limited slip differential.