This was a special edition package offered by FORD to compliment the 1979 FORD Mustang pace car. According to what info. I can find, they were available with the 302, 351, or 460 engine and auto or manual trans, your choice. It was also stated you could get it with 2 wheel drive or 4 wheel drive, no mention of long vs short bed or Flareside vs Styleside bed. There were supposedly a few wreckers built with the same package.