Rick,
From the parts book description, mentioning mud wing clamp, I assumed it to be on the front, could be wrong, as I have never seen a front mount on a C8.
The cab on a C8/AT was open, no doors or screen, the tilt over the rear body continuing over the cab like a pram hood. There was another seat to the right of the driver. Unfortunately, I have changed computors and a lot of my pics are on the other one, but I will see if I can find a photo for you.