That would be correct. The Alaska is the 2020 run and came with the plows and pilots. The BN are from a much earlier run. These did not come with plows or pilots. The Milwaukee also did not come with them. The only GP38s that came with plows are the new 2020 run, Alaska, BNSF, SP, UP, MKT and Firsco.
Note we will be releasing additional early run GP38s with the 2020 chassis. These will not have plows or pilots. Both are available as add on parts on AZL Direct.