Do you know if the Duramax is an 07 Classic LBZ or 07 New body style LMM. Hopefully it is an 07 Classic as that is the last model before they began equipping them with DPF.
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Steve Hayes
"Dust Off"
68 Camaro
Speed has never killed anyone. Suddenly becoming stationary, that's what gets you! "Jeremy Clarkson"
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