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Whip it out & tear it down, swap domed & relieved forged pistons and conrods, VVT phaser, decent cam, e85 / flex tune.
NA Ethanol and 13.5+ CR will get you at least +10% TQ, VVT will also spread it wide and want to spin for higher HP.
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Compression is King.
Naturally as-pirated, all-motor, all alcohol.
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