About 5-7hp came from the gears. Even without that, the hp gains are still quite large, greater than 5% increase.
However, my auto trans & tq convertor was busted so there's a possibility it wasn't putting down the power it should.
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2002 Laser Red Mustang GT
653rwhp/612rwtq
2003 Redfire Metallic Cobra Convertible
401rwhp/383rwtq
Cheaters Inc.
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