93 cavalier RS engine swap

I got an engine out of an 88 cavalier 4 door, its a 2.0L 4-cylinder...which is what's in the 93 now...just need to know if the older engine will fit! I have no idea how to check this...i've looked around on the net, and asked quite a few people...no one knows a definite answer...they look just about the same, but i need an answer soon!