Here’s another K100c to K100e change. It looks like the slightly raised center section of the roof above the cab on the C models was eliminated for the E models. It may still be there, but it’s, at least, greatly reduced. I think this holds true for both the Aerodyne and the Flat Top models.
It’s the area right below the center three clearance lights. It’s hard to find good reference photos, but here’s what I’ve got so far.
I’d still like to find a high-angle shot of the E model roof. Why are we always taking photos of tall trucks from the ground! ?