ITs probably a k-50.....I have no idea how you would identify it though....its hard to find ANY info on these things
K50
Oil capacity:4.2 lmp pints(2.45L)
Synchromesh on all Forward Gears
Ratios:
First Gear: 3.789:1
Second Gear: 2.220:1
Third Gear: 1.435:1
Fourth Gear: 1.000:1
Fifth Gear: 0.865:1
Reverse gear: 4.316:1
Applications:
Most 5-speed RWD Tercel, Starlets and Corollas with K-series engines.
1986 Corolla with 3A-U and 4A-U engines.
KM20 series LiteAces were fitted with K50 transmissions to 4K and 5K engines as an option, and to the 7K as standard.