LSX Innovations ST11 LS1 Conversion Swap Plates Adjustable 4 position These adapter plates will allow you to swap a 1997-2013 LSX style engine into any Chevy application that originally used 3 bolt motor mounts Including MOST 60s and 70s Chevrolet pickups and cars such as Camaro, Nova, Chevelle, and Impala among others. Our custom adapter plates are CNC milled from Billet steel to provide the most accurate adapter plates available Laser cut, water jetted, or plasma cut parts do not compare to the quality, precision and accuracy of a CNC milled product No grinding necessary for a flush fit