Kodiak and Topkick Factory pics

[70c10-08]

I wasn't sure where to post this so I will post it here.
This photo was taken in the year 1990 the plant was in Pontiac Michigan. I cannot confirm or deny that these were medium-duty cabs but that yellow one sure looks like it's going to be a Schwan's truck to me. Maybe the first batch of medium duties were built in Pontiac? I thought they were built in Janesville. Plus the bolt holes in the doors sure tell me that they're going to be medium duty's