so i was talking to a fellow mechanic and he mentioned that if i switch out the throttle body to a 3.8l throttle body, put a explorer air filter housing with a bigger hose, and a k&n filter i can gain about 20-25 horsepower. i have a 04 3.0 v6. i had a couple of questions such as, has anyone tried this? what year cars have throttle bodies that can just bolt on? and will it actually increase horsepower a decent amount. any help or input is appreciated.