My question is so close to this thread, I hate to start a new thread. If this is a hijack, I apologize. Looking at the 2900 RK (150 lbs heavier than the 2900 MK). Have a new (09) GMC 3/4 ton 6.0 gasser with 3.73 rear end. Won't be pulling enuff to justify the Duramax but wife really likes the...
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