I did 4.08 and its a decent mod, good amount of acceleration increase. But you will cruise at higher revs. At 70 im at about 3000.
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Mods: Z1 CAI, Fast Intentions HFC + Cat Back, 4.08 Gears + VLSD Swap, Southbend DxD Clutch+lightweight flywheel = 310 HP 285 ft/lbs
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