DEMOTOR PERFORMANCE Universal 8" Dual Diaphragm Chrome Brake Booster Bendix Style

Product description <img alt="1" src=https://m.media-amazon.com/images/S/aplus-media/sc/5f23fbaf-f510-4836-bfd4-4c5edfa9a1df.__CR0,0,970,300_PT0_SX970_V1___.jpg/> <img alt="1" src=https://m.media-amazon.com/images/S/aplus-media/sc/01456259-0234-4a27-9f79-2a5cb521171f.__CR0,0,1000,1000_PT0_SX300_V1___.jpg/> Specification 3-3/8" bolt pattern on back.This is a great upgrade from a dual diaphragm booster.It also offers approximately 20% (some say up to 27%) more stopping power.The booster will bolt up to most street rods, hot rods, and many other vehicles.The booster comes with an adjustable long rod,you might need a deep bore master cylinder to install.