Quote:I appears that this vehicle was a Open Cab and the "roof" was added later,looking at the Bucket windows.
That's a hard call to make. At that time in WLF's production, the design was based on an open cab style. On both Mark I and Firebrand/Fireball cab-forwards, the roof was an add-on, either from the factory or afterwards. The bucket windows on all canopy-cab Mark I's used this same style until 1965.
In 1965, the Newtown Fire Association (PA) bought a P85 rescue. They didn't like the look of the filler strip above the windshield and had WLF redesign their rig so that the roof sheet metal curved down to meet the glass, a design that would soon become standard on all WLF cab-forwards.