I am not sure if they have all gone to scrap around here or what. I have a 4 row JD that we bought new in about 1970 or so. In all the years that we used it, we rarely pulled it "forewards" My dad thought it was too agressive. So we turned it around to pull backwards. Guess it depends on the soil and the crop.
I still use mine, but there should be others settin around in the fence row.
Central MO. I'll keep my eyes open.