Cab 11 and Cab 12 doghouse, 30 cwt frame

[Libor Zachoval]

Hi guys
I am looking for some pictures of doghouses in Cab 11 and Cab 12, for both, Chevy and Ford. I am finishing both cabs in scale, but my reference on this part are rather poor and confusing, and any more info and pictures of these will be very welcome and much appreciated. Additionaly if anyone could help me with photos, drawings and dimensions of 30cwt and 3 tons frames, once again for both, Chevy and Ford. Anything helps. I am very new to this subjects, but I wanna get every details as accurate as possible.
Cheers
Libor