Yes it can. When come to modification, three things that will limit you, i.e. money, law of physics and state law. (well, if you want to keep the car street legal) If you have money and knowhow, there is no problem making 320hp out of 2ZZ-GE. However, I really doubt that you can catch up with Supra unless it is stock. 2JZ-GTE will have more advantage on torque. Supra is RWD, it has more advantage on straight line. Forget the auto-x. People don't buy Supra for that. And very few supras these days are still stock. It is so true that people spend arm and leg buying a Supra and spend few grands to bring it up to 500+hp. It is also true that you can spends not many grands buying a Celica and spend arm and leg to bring it to 500+hp.