These links should be helpful... You may want to go with a transmission from an earlier model to take advantage of the better gearing. There should be a metal tag on the rear passenger side of the transmission. It will have 51x65 on it. The ones tagged 51x79 will work but make your car slower off the line. The 93' models may be either of the two below. No way to tell the true year of the transmission once separated from the car/engine.
zerothread?id=132639http://forums.nicoc ... ?id=129690
Q45 Transmission:
90-93
RE4R03A 51x65 transmission 4 speed autoGear Ratio1st 2.784:12nd 1.544:13rd 1.000:14th 0.694:1R200V viscous limited slip differentialFinal Drive Ratio: 3.54:1
94-96
RE4R03A 51x79 transmission4 speed autoGear Ratio1st 2.569:12nd 1.479:13rd 1.000:14th 0.694:1R200V viscous limited slip differentialFinal Drive Ratio: 3.54:1