These super rare Keith Black Magnesium 426 Hemi Valve Covers are sure to deliver that unique "one of a kind" appearance we're all familiar with! Both are in excellent shape, free of any damage or repairs and the only set we have available. They're Dow 7 coated for that awesome look and work with your 1/4" size studs. And are the popular dual plug style that can also work if you're running 1 spark plug per cylinder, no problem... Just plug off 1 hole per cylinder (plugs not included) and you're good to go. This set can work with your BAE, Dart, or Alan Johnson Fuel Heads. However, if you're running "fat heads" like what the A/Fuel cars are running, (such as Brad 4's, 5's 6's, etc.) these will not adapt to your application. Install your spark plug tubes, breathers, studs and nuts, (sold separately) and hit the race track