best bet is to google used motorhomes. Isata F550 if you're looking for a truck platform. Grand Sport if looking for a Freightliner diesel.
here is one example for a Grand Sport
2005 Dynamax GrandSport Grand Sport 350SL, Holland MI - - RVtrader.com
Here is an F Series Isata
#7041 - 2006 Dynamax Corp Isata F Series (310) W/ 2 Slides Used RV for Sale for sale in Alvarado TX
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