Pretty easy changing seats. There is 4 bolts holding the stock seat to the floor of the car. The only thing you'll be taking from the stock seats is the seatbelt unit.
The slides will attach to the frame and the frame/slides attaches to the Corbeau seats. There should be a bolt at the side of the seats to attached you're seat belt.
This is my experiencing from putting Sparco Torino's into my car and a friends.