Vehicle Compatibility: Designed specifically for 1957 Compatible with Chevy models, allowing use of the original automatic column with 500, 600, or 605 style conversion steering boxes Complete Conversion Kit: Includes new column tube, steering shaft, and floor plate to simplify installation and ensure proper fitment Improved Design: Features an updated shift lever design with added firewall clearance for smoother operation and improved drivability Fitment Specifications: Column housing measures approximately 29-1/8 inches long, making it 3-1/2 inches shorter than stock for improved clearance Steering Shaft Details: Includes a 32 inch long steering shaft with 3/4 inch double D output, compatible with standard 3/4 inch DD rag joints This kit allows you to run your original automatic column with a GM 500, 600, or 605 series conversion power steering box. Features an improved shift lever design and added clearance at the firewall. Includes new tube, shaft, and floor plate. Accepts 3/4" DD rag joint. This column is 3 1/2" shorter than stock. The overall housing length from the top of the turn signal housing down to the end of the column housing is 29-1/8". Steering shaft included is 32" long.