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well the x cal will be coming off. i run all my cars on slicks and lunch at 5k. my gt turned a 12.9 with full bolt ons no tune and stock gears with sportlines.
the mach will have h pipe, jlt rai, dyno tune, new clutch, built rear, php spacer. the way it shows in the sig i turned a 12.6 with 20psi in the slicks and spinning 1st on a bad clutch. so 11.9 will be very possable.