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Next, The P-1SC was swapped for the larger D-1SC supercharger. With the tune altered for more boost and multiple people monitoring the air/fuel ratio and AIT, Jones started the first pull. After cutting the first pull short, it was apparent we were rapidly approaching the limits of the stock fuel pump. Jones quickly pulled a Boost-a-Pump off the shelf and installed it. With the voltage to the fuel pump increased, Jones began rolling through the gears again. The second was cut short yet again, and the tune was adjusted to alter the fuel curves. After reflashing the ECM, Jones spun the rollers for the first full dyno pull. Everyone stood in suspense as the computer screen lit up with the horsepower numbers. With 607 rwhp and 491 lb-ft of torque sitting on the screen, we knew we got the job done.