I owned a 94 Ranger with a Chevy 350 HO and a 3 stage Kodiak pump.
The welds were beautiful and the motor and pump were bullet proof.
I owned it from 98-07 and sold it for what I bought it for.
The older NR boats are probably build better than the new ones.
I would do a river check and if it passed I wouldn't hesitate to pull the trigger.