3 Slides. Rear living. Great value! Enjoy the open road in this 2006 Keystone Montana Mountaineer 328RLS used 5th wheel for sale at Rick's RV Center in Joliet, IL. You'll enjoy all the storage and space that this used 5th wheel has to offer. Rick's RV Center is your Illinois Jayco dealer and Starcraft dealer. We're located near Chicago and the corner of US-52 (Jefferson St.) and I-55 in Joliet, IL. We stock everything from diesel motorhomes, gas motorhomes, toy haulers, 5th wheels, and bungalows to pop up campers, hybrid campers, light weight campers and pull behind campers.