Thanks, Dave but I believe the monogram is a 1/24 scale model and the body I'm using is 1/25 scale. I had the same problem with my 77 Earnhardt Monte Carlo that I used a 1/25 scale "wheels of fire" kit for the body. The 1/24 scale monogram chassis will work, but the engine looked huge under the hood compared to reference pictures, so I had to go with the 1/25 scale amt 91 thunderbird chassis with a 91 1/25 amt olds, chevy engine, for under the hood. That's why when I found this mpc 1/25 scale 71 mercury model which is only 4 years older then the 76 torino , I knew it would work with the 1/25 scale "Starsky and Hutch" thunderbird kit. That's why I included a picture above of the torino sitting on top of the mercury. They are almost exactly the same length. Thanks again for the input.