Just an update. I never could find any internal parts for the upper, I had several broken internal plasic parts, missing spring, as well as a broken die cast pivot deal that the signal lever snaps into. I also discovered that 78 is a slightly different colume than the 79 and up. The 78 has a different spline/groove arrangement where the lower shaft attaches to the upper(near the firewall). I was able to find an entire used 78 colume from an El Camino, it fits perfectly and all is well. Thanks -Jim
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