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Official: SpeedFactory SF600R Challenger
SpeedFactory has announced today the first six-speed manual, 600hp SF600R Challenger. The ‘R’ designation in the SF600R Challenger denotes a 6.1 liter Hemi block with an increased displacement to 7 liters. The 426 powerplant produces a dyno-proven 595-605hp on premium-grade 91 octane pump fuel.
Additional SpeedFactory modifications include a high volume air intake and Corsa stainless [...]
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