I installed a Dometic 320 in my 2010 and no issues other than a need for a flex water hose connection and raising a cabinet door an inch. I have read on this forum that folks have had to use the old gasket, but mine (ordered from Tweety) came with a new gasket that was a perfect fit.
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Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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