Black Chrysler 318-360 Pro-Billet Distributor All The Performance Of Our Pro-Billet Line Now Available With Black Cap For Your Small Block Chrysler. Must Be Used With 6, 7, Or 8-Series MSD IgnitionDifferent springs and stop bushings are supplied so you can tune an advance curve to match your application. Get your Small Block Mopar fired up with billet accuracy and performance. The MSD Black Cap includes 316 Stainless Steel terminals and Race Rotor and underneath you'll find easy access to the adjustable mechanical advance assembly for easy adjustments. This advance is designed for accuracy and strength with TIG welded weight pins, nylon pads