bronxWRX

hello all
to anyone who reads this and can help please chime in because i am seriously freaking out
its a bit of a long story.....so here i go
i own a 1994 JDM impreza WRX
around january a buddy of mine who has jdm connections ordered me a clutch for my car......i was an idiot and waited about 5 months to finally get around and installing it, it was what i was doing all yesterday.....finally popped the tranny off, was super pumped to get the new clutch kit on, when i noticed that there was no way this kit was for my car!!!!
The whole thing i need help from you all fine folks is this.......did i give my friend the wrong engine code in saying EJ20g, 1994 jdm subaru impreza wrx?
If it is wrong, what engine code is EJ20g for?
I have looked through various sites and sources for the answer on my own, but it all is just confusing and i was hoping someone here could give me a clear cut answer.
i would go look for the engine code myself but my car is cureently in my brothers garage 1.5 hours away, and there is no way he knows what an engine code is or where to find it.....someone pleaaaaaseeeee helppppppp
much appreciated