The T- TRAX ADVANCE is the most effective LSD unit available & has the best overall advantage in comparison with the other aftermarket products available today. Amazing penetrating angles at the time of Drift, with such persistence in the accuracy of line taking and all aspects of cornering, the T- TRAX ADVANCE shows amazing efficiency with the aggressive cam angles which is optimum for drifting the friction clutch discs also has a larger surface area, furthermore with the use of the coil spring discs and the high setting of initial torque which is raised higher than any other brands in the market today. NISSAN Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes 1991 - 1996 180SX S13 L4 2.0 T SR20DET GAS From 01/91 Thru 12/96 Production Date; Type X/R Model; Manual Trans; Auto Trans; Replaces Stock Viscous LSD 1988 - 1990 SILVIA ALL ALL ALL ALL ALL ALL From 04/88 Thru 12/90 Production Date; Q's Model; Manual Trans; Auto Trans; w/ CA18DE Motor; Replaces Stock Viscous LSD 1991 - 1993 SILVIA ALL ALL ALL ALL ALL ALL From 01/91 Thru 10/93 Production Date; Q's Model; Manual Trans; Auto Trans; w/ SR20DE Motor; Replaces Stock Viscous LSD 1993 - 1996 SILVIA ALL ALL ALL ALL ALL ALL From 10/93 Thru 12/96 Production Date; Q's Model; Manual Trans; Auto Trans; w/ SR20DE Motor; Replaces Stock Viscous LSD 1991 - 1993 SKYLINE GTS-25 L6 2.5 N RB25DE GAS From 08/91 Thru 08/93 Production Date; Auto Trans; Replaces Stock Viscous LSD 1991 - 1993 SKYLINE GTS-25 L6 2.5 N RB25DE GAS From 08/91 Thru 08/93 Production Date; Manual Trans; Replaces Stock Viscous LSD