check for soft valves, and injector types. New injectors indicate 94+ (i think) and i think yugobernie has a pic of what soft valves from the 90 & 91's would look like vs those of a 92+.... Could also use CAS type and PTU type (unless recall was preformed) and look for aiv stuff (90-92) and VTC solonoids (90-95)... if there are none it's a 96. Unless of course different rules apply to the JDM's..