Hi everyone this is my first post and first civic so sorry if i ask dumb questions... so i have a 6 speed tranny in my 92 honda civic dx sedan the only id codes I found were these. (c5b p20). (S20 1210594). They are two separate codes hopefully someone recognizes one or can point me in the right direction. Thanks in advance for the help

 

There's a stamp on the casing near the fill plug.. either A000 or B000.. something like that.. A000=DX/LX and B000=SI/EX