If you have at least one inch of room between the slideout frame to the top on the sidewall, it should be able to be installed with a new awning rail for the slideout topper being installed with the groove part at the top.
The only problem is the topper might slope back toward the coach, but more that likely it will be level.
Dealers only like to install as written in the book, but sometimes that is not possible.
Ron
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