Borla 400843 CrateMuffler?. CrateMuffler?. Small Block Fits Chevrolet High Output 35. Small Block Fits Chevrolet High Output 350/ 383/ 406 V8. Part #: 400843. Warranty Type: Manufacturer Warranty. Check your applicable laws and manufacturerâs publication(s) and/or website(s) for manufacturerâs warranty, maintenance, safety, mounting and any regulatory compliance/noncompliance (including California CARB - California Air Resource Board) information.
