Ok guys. I recently bought a 91 celica and when I got it, it was running only on one cylinder. So I rebuilt it thinking it would have a pretty decent amount of power.. I was impressed that I rebuilt the 5sfe engine and it actually ran..

(BUT) it really doesn't have the power I want.
Case in point I want a faster car and am willing to spend the money to do it all i need to know is what would be the best engine to swap the 5sfe with. I saw a post of a guy that swapped it for the 3vzfe V6 and it seemed like the best idea. What is the opinion of everyone here of the best engine to swap it with?
Thanks for any Ideas
Jade