s14 drivetrain????

[xS-13x]

ok so i think my trans is about to go out. :

i found a rebuild kit online but im not sure if its the right one cause its the only one i can find. so is there a certian name to call the transmission like how the engine is a ka24de, is there something like that i can look for?and would it be cheaper to just buy a new trans and stuff? please help i tried searching but im not to sure what exactly to search for so yeah....