SZ, RZ autos ('93-'96) and the RZ-S models were all 'optional LSD'.
RZ 6 speeds, GZ, SZ-R and RZ-S 6 speeds were all 'Torsen LSD'.
Follow this guide to check what your car is against your VIN plate:-
Model Country E E (1978 compliant chassis), GF (1998 compliant chassis), R (Export UK spec)
Chassis Code JZA80 JZA80 (Toyota Supra Mkiv)
Model Code A A (Supra Mkiv)
Body Type L J (Liftback with aero roof), L (Liftback)
Gearbox Type M F (6 speed Getrag manual), M (5 speed manual), P (4 speed automatic)
Body Grade V Q (RZ), S (SZR), V (SZ or RZS), Z (GZ)
Engine Type F F (EFI & DOHC), Z (EFI & DOHC & TT)
ENGINE Example Description
Engine Type 2JZ 2JZ (Twin Cam 24 Valve 2997cc straight 6)
Aspiration TypeGE GTE (Twin Turbo), GE (Naturally Aspirated)
Engine Capacity (cc) 2997 2997cc (Capacity of straight 6 2JZ engine)
FRAME NO. Example Description
Frame Type JZA80 JZA80 (Mkiv Supra chassis, twin A-arms, coil over shock)
Frame Number 0022879 7 digit chassis number (001010-0041000, 1000000-1005857)
COLOR & TRIM Example Description
Paint Colors 3L2 Super White II (040), Silver Metallic (199), Dark Brown Gray Mica Metallic (1A1), Quick Silver Metallic Graphite (1B9), Black (202), Super Red IV (3L2), Super Bright Yellow (576), Grayish Green Mica Metallic (6N0), Dark Green Mica Metallic (6P3), Deep Teal Metallic (752), Blue Mica Metallic (8L5)
Interior Trim FC20 Front Cloth Seats (FA, FC, FF), Front Recaro Seats (FB, FK, FL), Front Leather Seats (LC, LE, LF, LG), Black Plastic Trim (20), Dark Gray Plastic Trim(21)
TRANSMISSION Example Description
Transmission W58 W58 (Toyota 5 speed manual), A340E (4 speed auto), A343E (4 speed auto), V160/V161 (Getrag 6 speed manual)
AXLE Example Description
Crown Wheel Size A A (8'' - 200mm), B (8.7'' - 220mm)
Differential Ratio 01 01 (4.083:1), 02 (3.769:1), 03 (3.267:1), 04 (3.538:1), 05 (4.083:1)
Differential Type A A (Standard open differential), B (Torsen LSD), D (Torsen LSD)
PLANT Example Description
Plant Number A22 Production location and line (A21-A26, M21-M22)