12-29-2019, 12:59 PM
(12-29-2019, 12:32 PM)lajry Wrote: With the "notch" in front of cab looks more like a NW2 shell. The SWs had a slope in front of the cab.
Like many diesels with a long production run, the SW1 underwent several modifications over time. There's some information HERE outlining the changes.
Wayne