There may be a mechanical consideration. If the roof units are ducted into the roof HVAC system, the larger units may not be ducted in the same place as the smaller unit. Therefore, it may or may not be a simple lift out the old and install the new. Winnebago customer service should be able to guide you on this topic.
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
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