The GR STI might be dead, but building the perfect canyon weapon from a GD/GE chassis has never been more dialed. While everyone's chasing the latest hot hatch, smart builders are picking up clean STI …

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The Mazda RX-7 FD produces 255 horsepower at the wheels stock — not at the crank like Mazda claimed. That's roughly 290-300 crank horsepower from the 13B-REW twin-turbo rotary, making it one of the mo …

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The Nissan 370Z has the most forgiving wheel wells in the Z lineup, but most owners still get fitment wrong. Unlike the 350Z's restrictive rear quarters, the Z34 chassis gives you room to experiment — …

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The Honda S2000 purists are about to lose their minds, but both the LS3 swap and turbo K24 paths deliver 400 horsepower while completely transforming what Honda built. The LS3 weighs 100 pounds less t …

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