Hi, I've done some searching and I'm either not smart enough to know what I'm seeing. I bought this one off of ebay https://www.ebay.com/itm/1978-1987-El-Camino-33-Black-Tilt-Steering-Column-GM-Column-Shift-gmc-gm/264443502381?hash=item3d920f9f2d:g:2tkAAOSwX7NdZBJB and it appeared by the title that it would work. I had my mechanic work on installing and he's telling me that there's a plate on the firewall of the existing one but the one I ordered does not. Is there some type of conversion kit I can buy or would I just be better finding someone to rebuild mine? If so, are there any contacts out there that do this for a reasonable rate? Thanks again in advance for any help!