Stock code gearbox Wira units do not have LSD except for rare Japanese-market F5M22 with “LSD” stamped after the code. If you see “W5M33” with a yellow paint mark on the casing, that indicates an Evo 3 RS with factory LSD.
If you see , buy it immediately. That is a genuine Evolution 2 gearbox (close-ratio, 4WD, strong). code gearbox wira