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To make the Silvia transformation complete, the factory KA24 was swapped out and a Japan-spec SR20DET was nestled in the engine bay. Law decided to upgrade to an HKS ball bearing GT2540R turbo, which bolted to the factory cast turbo manifold. This particular turbo is most effective at high boost levels. To maintain the correct pressure, he adapted an HKS EVC III to regulate a level of 1.2 Bar.