OEM Part Number R91001C-30" Features: -- 30'' Steering Column (measured from bottom of shaft to top of shroud) -- 2" Column Diameter -- 1" DD Output Shaft (This column will take either a 1" DD around the outside of the shaft or a 3/4''DD will slide inside the shaft) -- 4&1/4'' Male GM wire connector -- With a 9-Bolt Style Steering Wheel Adapter -- Tilt Lever, Turn Signal Lever, Flasher Button Included -- Wiring diagram included -- Without key -- Without ignition switch -- Chrome finish -- Made of Stainless Steel (except the bell housing is cast aluminum) -- Works for manual transmission Note: Professional installation is highly recommended. Wiring Diagram: Black--ground for horn Blue--right front turn Brown--hazard flasher power feed Purple--ture flasher power feed Yellow--left rear turn Green--right rear turn Gray--left for horn