Thanks. No specific year, but if 3-hose clusters is more accurate for later time periods I think that works. I use a fair amount of artistic license.
I'm putting hoses on a GP9, GP35, GP40, and 2x GP60's. They all have pretty large plows on the front, even though that may not be prototypical. I've only tried to install the 266 hoses on the GP35 and GP40 so far. My plow installation on the GP35 was done probably 25 years ago when I was a kid and it's pretty sloppy and doesn't sit flush with the pilot. So the 266 hoses end up not being long enough to get from their mounting point on the pilot and then hang down the right amount in front of the plow. I bought some 294 hoses to account for the distance to make it out through the plow. Hopefully they will work.
Were the 266 and 294 hose lengths prototypical for certain locomotives or railroads, or are there two different lengths available for modeler preference? I tried a google search but nothing came up.