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Doubler Attached To Trasnfer Case

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The 203/205 Doubler has long been the go-to set up for GM, Dodge, and Ford trail rigs. Offroad Design’s Magnum opens up a new range of options for transmission adaption with 21-, 23-, 24-, 27-, 29-, 31-, 32-, and 34-spline input available. With a long enough wheelbase (we’d recommend 103-plus inches minimum) you could swap this into a just about any 4x4 and have one of—if not the—strongest multiple gear ratio transfer case systems on the market.