I am getting my dad's 2000 Buick Lesabre, and I didn't think it was worth working on until I saw that alot of people are putting performance parts into their Buick Regals. Is there anything that I can do to a LeSabre to make it as quick as some of these Regals? If so, what? I know the first step would probably be an K&N drop in filter, but what else? I don't want to spend too much time and money and have the car still be running like my grandma's (and no, she doesn't have a fast car

), so is it even worth it? TIA