2008 BEAVER CONTESSA W/4 SLIDES (WESTPORT), NEW RV *** 2008 Beaver Contessa W/4 Slides by Monaco. 42 Westport IV. Features include a 425 HP Caterpillar diesel, 10,000 Onan diesel generator on power slide tray, 10-airbag Roadmaster chassis, one piece fiberglass roof, one piece windshield, power chrome mirrors, deluxe full body paint, 3M film front mask, full length mud flap, power step well