Anybody know if a 2013 Duramax would fit between the frame rails and firewall-radiator?. Looks like a lot of room leftover with the 270 ci inline in it. Engine has the Allison tranny with it too, with only 33,000 miles. Truck is all original 3 ton fire truck, putting TBI FI on it right now. Saw the Dmax for sale, got me thinking!!!
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