Had several D-8 8R, 2U and 13A dozers, some w/ WWII Corps of Engineers rebuild tags, until scrap prices got so high last year so now they are gone... The running 2U was a good machine though that pony could be aggravating, I'd converted it to rear cable control for the blade years ago, the others were either fixer-uppers or parts machines. Had a hydraulic front end, angle blades, etc. and a wet clutch or two as well, plus a stack of parts, to fit those models. But you had to be a man to run one all day long, no one would run one these days as welfare pays too good and jail has air conditioning and cable...
Don't bother flaming me for 'scrapping our history', I'd tried to sell this stuff for years w/ no takers, people would come by and offer $2500 for a running D-8 and then expect me to haul it and wrench on it for free! They averaged about $4,300 a piece as junk, I bought a Mini Cooper S with the $ from the dozers and other farm junk around here.