I was wondering what would be the best exhaust i could put on my Bullitt to add horsepower. I don't really care about it sounding louder or anything. But i am sure if it adds power then it will. I just want to know what kind would be the best exhaust systme and how much horsepower would it actually add. Also if you can give me prices too. My second question is what could i put in the car to add even more TORQUE. i don't want to put a supoercharger or anything like that i don't have too much loot to spend.