Top Secret, one of the top tuners in Japan, designed and built the Fusion RX-1 V35 GTR Skyline that has an output of 800 horsepower and a top speed of 221 mph.

Top Secret offers both single and twin turbo kits for the vehicle's VQ35 motor that can be expected to put out 450-550whp. The single turbo kit comes with an HKS GT30 Pro turbocharger and Top Secret Steel Exhaust Manifold. Intake and intercooler piping is not included with kit. Their twin turbo kit is equipped with twin HKS turbos and Top Secret Stainless Steel Exhaust Manifolds. Intake and intercooler piping is included with this kit.

To Top Secret's credit, Smokey's bandit recently took the top prize for ‘Best Tuned Car' at a Max Power show in Blighty.