The rails included are Recaro standard seat rails that attach to the adapters YOU need to purchase to install into your car. They fit most if not all muscle cars. I had them going into my 69 Camaro, but I am selling the car instead to buy a GT-R. My Camaro already has a very similar set of seats in it. I could meet you in south San Antonio and save you $100 in shipping. I'm not sure if it's worth it though, shipped to you would only take one to two days.
You can buy the adapters at Wedge Engineering and no extra drilling is necessary, you can always call them to verify. They make standard adapters and low rise adapters for Camaros.
http://www.wedgeengineering.net/HOME...6/Default.aspx