This Corvette Backing Plate is designed for the LEFT Hand FRONT SPINDLE of the vehicle. It is a perfect fit for the years 1965-1975 and is an essential part for the steering and suspension system. The plate is made with high-quality materials and is built to last, ensuring that your vehicle will perform optimally. The manufacturer part number is not known, but the plate is compatible with various Corvette models from the mentioned years. It is easy to install and requires minimal additional parts. This item is a must-have for any car enthusiast looking to upgrade their vehicle's steering and suspension system.