Look at entries for the TN55, 60, 65, 70. Same series, different specs. 2wd, mfd, cab, vineyard, Supersteer versions; 8x8, 12x12, 16x16 transmission choices. Remotes are also optional (up to 6 I think?). Early and late hood/front end (better viewing with lower hood). Exhaust vertical or underneath. Early and late front end loader mount designs (for factory loaders). High and low flow hydraulic pumps (optional or depending on model). Low, mid, high option versions (2wd are probably mostly low option level).