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Im running the 4.45 now. Ran it out at Beaver Run track day Sunday and it worked like a charm. Didnt need to downshift nearly as much and used 4th and fifth gear only and never had the RPM over 5000. Shifts like a dream. Love it
The 4.45 ratio puts much less strain on the rest of the trans due to the additional mechanical advantage. It takes less power to turn the gears and drivetrain = less stress on all parts is the best way I can put it. That includes the clutch.