Welcome. Agree with the you should search first. Thats a big open question. but the cheapest way is a centrifugal supercharger like a Vortech. Even with good used parts and you doing all the labor were talking 7,000.00 dollars in a car that you would have a hard time selling it for that. Plus down time, so you gotta love the car. And that doest include what ever is already wrong with it. I've seen some folks who have a Mark VIII already with many problems and 200,000 miles talking I want to supercharge it and its there DD and they only have 100.00 dollars but they'll get more next week. Just a bad bad idea.