I suggest you first Google it. Then if you cannot find a good answer, contact a service department of the larger RV sales and service near you. Auto dealership service departments rarely have a working knowledge on RVs
Ford for sure
Ford does sell F and E series chassis special order. Most dealerships that sell the commercial class trucks and vans should be able to assist.
I would go to Ford but also I will also check the internet and ask him mechanic 2 at the same time get two opinions not one
Ford dealers are just for cars.. I'm would suggest an rv dealer
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