Here are some pics of an AMT Camaro I did awhile back. I used a Parma 1/24 scale lexan stock car interor and I didn't like the body mount system AMT used so I glued EverGreen styrene strips to the inside of the rocker panals and driled extra holes in the chassis and used some self taping screws from the bottom up into the styrene.
The Firebird is on Parma FCR chassis that I done several years ago.