I believe the trans in the car is an S20. The car is 92 Si. D16z6. Doin' a swap for another D16 and figured while the motor is out, put the stage 2 clutch in, and MAYBE change that gear. Since it's a D series motor, would I need a D series tans? The dx 5 speed 5th gear fits in the trans that's in there now? I wouldn't be doin' it myself, but would like to know SOMETHING before having it done.