if the motor is still in the car...only way to really know what tranny you have is to

jack the car up

look at 11 oclock (pass side) where the axles goes into the tranny

at that mark should be a circular marking about the size of a nickle

inside that mark should be a code desinating what bearing is in the tranny 3000/PL3 is SI tranny bearing code....if it does not say that then you do not have an si tranny in the car

like sunrise said the easiest fast tranny would be 89-91 si

the IDEAL would be hybrid gearing ZC 1-5 with SI final drive :o