Updating the ride and handling on a classic Mustang is now even easier with Heidts new PRO-G independent front suspension and high horsepower IRS. Check out the video below of Black Dog Racing out of Lincolnshire IL installing our new PRO-G IFS and IRS on a 67 Shelby tribute car. Powering the Mustang is a new Coyote crate motor, backed up by a Tremec 6 speed transmission. Next stop for the Shelby, Autobahn Country Club for testing and final before and after comparison numbers.