Upper & Lower Tube Diameter: 1.5. Neutral Safety Switch: Not Included. Gear Shift Indicator: Not Included. Under Dash Mount & Floor Mount: Not Included (reuse original or install with an ididit kit). A rag joint is required to connect the column to the gearbox.
The original may be reused if functional, but replacement is recommended. Use an ididit installation kit for best results. Compatible with aftermarket steering wheels (GM style adaptor required). Under Dash Mount & Floor Mount: Not Included (reuse original or install with an ididit kit) A rag joint is required to connect the column to the gearbox. To retain your original Corvette wheel, use the ididit 1963-66 Corvette Steering Wheel Adap.