Does Anyone Know What Car Motor Can Easily Be Changed with a 1994 Camaro V6 3.4 but Has to Be Bigger?

i have a 1994 camaro which its nice and all but not fast! i need to redo the motor in it but people say its not worth it.. i need to know what type of other car motor can be changed with it which is faster and bigger but also easy to swap? and suggestions

Suggestion:

3.8L V6- THE SS VERSION, 5.0L V8, OR A 350CI V8, I WOULNT GO BIGGER THEN THAT ON A '94 AND A 350CI IS A TIGHT FIT !!!