Cab 11 C8
And
here's a large image of a Cab 11 F15A (too big for here)
This is a Ford F8 Cab 12 with the "alligator" style hood or bonnet.
This is an Australian production C15A with canvas "Sunshine" roof.
The reverse sloping windscreen was aimed at reducing visibility to aircraft, as well as stopping snow and slush piling up (not something we need to worry too much about in Australia).