Those are correct. NH had a strange marketing setup those years; all 4 models were the same chassis size, but the higher horsepower models 1725 and 1925 were base models that could have some options added whereas the 1530 and 1630 were duluxe models. The 1725 had the most basic drivetrain with few options. I have a 1925 4wd H/stat with folding ROPS, extendable end links, from factory, and I added from the deluxe line the floor mat, tool box, and the front wrap around headlamp assy for more side lighting. I also added 2 rear flood lamps, both halogen with 1 having a 30x60º spread and the other with a 20x80º pattern. I also added back the deleted locking diff pedal assy. I have 1996 (print date) 1997, 1998 dated brochures if you have any questions.