I been working the yard job for about 3 months and have not seen a GP-40 once yet in that time span. On second thought, I have not seen a GP-40 in Pond in well over two years. They are very rare in Pond, but you usually can see one or two in Oak Point while driving on I-95. All the variation in SD-40 paint schemes include Conrail. CSX's "bright 90's", and CSX "dark future". Last week I seen 3 SD40's, each one in a different mentioned scheme plus 1 B36 coupled to them.
For even more scarce CSX rarities, ones I have not seen in close to 5 years, CSX SW-1500, MP15AC, and a single GP-15 lurking between Selkirk and Pond. As we all know the B23-7's got retired 3 years ago. They used to be very common (3 to 5) engines a day, then they disappeared overnight. The SD-40 dominated since.