please help what is a A3 tranny?

i met somekid online that lives 4 hours away with a 90 RS 2 door integra 5speed… before i take the trip i wanna know what hes talking about, he said his tranny’s code is A3 and the car is completely stock, he says it says A3 on the front plate of the tranny, anyone have any insight?

well I’m kind of stumped… if it’s anything like the A1 tranny, it’s just stock.

All I’m seeing is A4 (short geared G3 GS-R)

No such thing as a-3 tranny. Maybe the one is oil covered and he thinks it is a 3!!! But there is not an a-3 tranny.