Firewall Pad Push-In Clips are the only way to correctly install the 1956-1957 firewall pads. Don't settle for an inaccurate substitute when installing that new firewall pad when have the parts to get the job done right! #611C will work on any 1956-1957 Chevy model. 1956 cars need 11 of these and 1957 cars need 12. Sold as a pack of 50.