Brother finally got the 5.0L engine in and running. Rare GT40P prototype heads no factory casting marks... #foxbody #foxbodymustang #gtmustang #GT40p50L #StaggeredDurationCam #DualLiftCam #GasFumesOrPerfume (at Walnut Grove, Mississippi) https://www.instagram.com/p/B5zBhP9hebf/?igshid=ihg2a32j6n08










