From the installation manual:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Our Magna Charger kits are designed for stock engines, with stock components, in good mechanical condition only.
http://www.magnacharger.com/pdf/manual-HummerH2.pdf
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