Pirate Mfg Hot Rod Black Billet Aluminum Distributor Hold Down Clamp SBC 350 BBC 454 Hot Rod Black Anodized Billet Aluminum Distributor Hold Down Clamp CNC-machined from 6061-T6 billet aluminum Includes stainless steel mounting stud/bolt, nut & washer Will fit just about any Small or Big Block Chevy 283 327 350 400 396 427 454 engine Perfect for your off road, jeep, rock crawler, muscle car, street rod, dune buggy, or sand rail project.