Re: 3 on the tree to 700r4
Back in the late 1990s we put a 1970s (Buick or Pontiac, not sure) tilt auto column in our 1967 El Camino that was a 3sp manual column shift.
It was not plug and play, but it was less work than swapping the transmission itself. We had to make a support bracket from the donor column, and the 1967 column, and made recessed T-Nuts so they could reach the threads. Then my dad and I removed all the lock parts and ignition switch parts, ground it off and filled it back in, painted it to match. I have the 1967 wheel on it now. It has a mix-match of parts for turnsignal/horn/cam, but it all works, even the neutral/park switch. We used a simple wiring adapter from a truck parts place.
The reason for this madness was, we figured an actual GM column was better than a generic, and it was $25. Also FWIW, the shifter does work all 7 positions of the 700R4 PRN4321 with 1 being laying on my thigh.
1967 El Camino Malibu - Deepwater Blue
ZZ4 350, FiTech 600 complete!,Roadmaster tank, 700R4, Underdash A/C in progress, JGC Steering, 1990s truck serpentine.