GM used so many parts in so many cars that some times you see something for sale that will work but is not the exact replacement. If look your old one it might be a little shorter. I bought a tilt column for my old 69 at a parts meet that fit fine but wiring for turn signal and ect. was not right. I called the guy and new what was wrong asap. He said it was an Oldsmobile unit and he forgot to relocate wires. He later said he found Olds, Pontiac, and others up into the 70,s that fit but sometimes not the exact part. I have also ordered parts for my GTO and was sent Chevelle parts, they worked but were not the same.