Start your engines – The day has finally come as the guys finish up their 1969 GTO, Project Henchman, and take it on its first drive. They add a few finishing touches and show you how to carefully install a spoiler on finished paint, along with some slick new stripes, and even walk you through how to get some 3D-printed hard-to-find pieces that put the cherry on top of this menacing muscle car.
