Bill, I just saw a picture of a fire engine that has MACK name plates and bulldogs on it, but it (unless my eyes are going screwy on me) it is a 1959 or 60 C model Ford cab.
It is being told that these cabs were built by "BUDD" and sold to/used by Ford and Mack. This is the ONLY example I have ever seen yet in all my days working with fire apparatus. I cannot post a copy of the picture I saw on here, but I would gladly send it by e-mail to anyone who could post it in this thread.
Rare truck! Only 863 were built by Mack. Structural differences however. Ford had a flat floor across the cab with the shifter potruding from it. Shift linkage went on the passenger side frame rail back to tranny. Mack cut a tunnel through the center of the cab and the motor was between driver and passenger. Their shifter was mounted on a tower that potruded into the cab above the motor on a short shaft, IH used a similar setup on their small cabovers. Mack put gas and diesel engines in theirs.
Truck builder FWD also used ford cabs on special trucks they built on custom orders.