The 1989 and 1990 9500 have 200 HP. Originaly, the 1989 9500 had 190 HP but a modification program from Deere increased the engine power to 200 HP.(All 1989 9500 should have been updated by dealer, but....) The 215 HP standard engine and 235 HP optionnal were first offered for the 1991 models.And, it remained like this for the 1991-97 9500. Engine model for 1989_90 9500 is a 6076T (without aftercool). And, for 1991-97 9500 (215 or 235 HP version ) is a 6076H (air-to-air aftercool). YSO