The car should be quiet with stock components. You may hear the engine roar when you rev it hard, that's it. Floor it to check it out. It's power at your fingertips. Now turbo charge it and you'll have a sleeper. Upgrade it to a Flowmaster cat-back exhaust system 2.25" piping on back. 3" possibly with turbo. Get a Flowmaster Performance 40 Series Delta Flow and go to a muffler shop where they can custom bend your pipes and do necessary cuts. I use to have those before and it sounds so sick.