We have a 2017 Thor Challenger built on a 2016 Ford chassis and the motor home was assembled by Thor in 2016. We purchased it Jan 2017. Our title says it's a 2017, and our insurance company insures it as a 2017.
It is very common for the chassis to have a different year then the completed motor home. Our last motor home, a Fleetwood, was the same. It is also true that when buying parts for the Ford chassis part, you buy for the year of the chassis.
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