2006 Fleetwood Discovery 39L, Discovery 39 L is no exception. From the custom all steel Freightliner chassis to the Aluminum framing and fiberglass walls and roof this is a well built solid Coach. The Owner's are non smokers and that always helps keep the interior of a RV nice and fresh.This 2006 FLEETWOOD Discovery 39 L model is constructed on a Freightliner custom chassis and is powered by a Caterpillar C7 model 7.2 litre turbo diesel engine rated at 330 HP coupled to a Allison 6 speed automatic transmission. $95,690.00