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Convert your H1 Hummer to a GM Duramax diesel engine and Allison transmission with Tin Man Fabrication H1 Hummer Duramax conversion kits! These kits contain laser-cut precision-welded mounts, a transmission crossmember, and installation hardware. Excellent for both low and high-horsepower applications, these Tin Man Fabrication conversion kits require that your H1 Hummer has a minimum 2 1/2 in. body lift for sufficient clearance.
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$624.99
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