Yes, the site is broken and it loops to robots.txt on the Wayback Machine.
Seems he excluded download pages from robots and history.
You are asking about the CSX paint scheme known as YN1
This page
https://web.archive.org/web/20120331130612/http://www.bullsheet.com/news/paintlegacy.html
gives the history of CSX paint schemes, and gives the numbers of the F units that received this scheme as 116-117-118-119
The company had no doubt grown unhappy with the scheme as well, and on August 21, 1989, it came up with its first design using a yellow nose. The engine getting that honor was SD40-2 unit 8420, which had been rebuilt from an SD40. This design - the fourth since CSX began painting engines three years earlier - restored blue to the top portion of the cab, applied yellow to the nose with blue lettering, and had an extra thick yellow frame stripe. This was actually a one-of-a-kind design, as on November 7 of that year the scheme was reintroduced on SD40-2 unit 8123 wearing the same colors, but with a four-inch yellow frame stripe in place of the broadened stripe of 8420. This was the beginning of the scheme that eventually became known as YN1.
The first YN1 loco was SD40-2 8123 with the broad 4 inch yellow side stripe:
http://www.railpictures.net/photo/59187/
This would be a good example of that style you are looking for on 116, an F7:
http://www.railpictures.net/photo/590148/
and this is the same loco:
http://www.railpictures.net/photo/137352
A very good history of this locomotive is found here:
https://www.csx.com/index.cfm/about...ield-800-legacy-locomotive/?mobileFormat=true
And the yellow nose remains so:
and
this thread has a story relevant to the photo above: