No, a transmission from a 1985 S10 4-speed manual with a 4-cylinder engine will almost certainly
not fit a 1989 S10 with a 5-cylinder engine. While they're both S10s, the bellhousing bolt patterns (where the transmission mates to the engine) will be different. The input shaft's length and diameter might also be incompatible. Even if the bolt pattern *were* the same (highly unlikely), other aspects like the clutch linkage and possibly the output shaft dimensions would probably be different.
You'd need a transmission specifically designed for the 1989 S10's 5-cylinder engine.
