The stock T-5 trans isn't known for it's strength and ability to withstand abuse. I think powershifting will defineitly shorten the life of your trans not to mention clutch, u joints, rearend. I'm not a veteran drag racer but have been to the track a couple times and saw no difference in et's from powershifting. It was all in the 60ft.
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90LX 5.0 5 speed. 3.55's, pulleys, exaust...13.96@98mph at at Pomona. 220rwhp 281tq. BBK springs, Koni Red's.
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