9000s
The 9000 series are the giant articulated tractors. Before these were the 30, 40, & 50 series 4WD. They had a gap from the 9000s to 9020s. No 9010s! They are very luxury these days, with quiet, comfortable cabs. The Models are: 9100, 9200, 9300, & 9400. Then of course the 9020s, which look about the same, with models: 9120, 9220, 9320, 9420, & 9520. After this came the 9030 series, which has a cabin the same as the 8030s. You can even get electric mirrors! Models: 9230, 9330, 9430, 9530, & 9630.