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Monaco Coach Corp. has redesigned its top-of-the-line Holiday Rambler Navigator diesel pusher motorhome for 2007 giving it 84-inch ceilings and new front and rear caps. Available in five 40- to 45-foot floorplans with three or four slideouts, the 2007 Navigator is built on Monaco’s proprietary 48,160-pound GVWR Roadmaster S-series chassis powered standard by a Cummins ISM-II 500-hp engine. Detroit Diesel and Cummins engines, rated at 515-hp and 525-hp, respectively, are optionally available. Interior features include natural or stained oak cabinetry, sculptured carpeting, Corian sinks, countertops, backsplashes, nightstands and living room window sills. Also offered on the 2007 Navigator is a 360-degree SEE-Vision monitoring/security system. MSRP: $434,047