Any Motorhome was made by another company other than the Vehicle manufacturer (ie: FORD).

The Motorhome company "Roll-along INC. " would have mounted their camper on a FORD chassis.

I suspect any manual will be offered by "Roll-along Inc."

I also suspect it to be an F-350.

What is it that you wish to know about the Truck part of it ?

The last Roll-along camper was made in 1980.

The company, Roll-along Inc., is now defunct.