Shift handle adapter

I had one of these hurst towers years ago that I had gotten out of a ram van. Used it in a 1960 el camino with a muncie M21. I bought the Hurst retainer plate with the 2 threaded holes, and the correct bolt on handle to clear the bench seat. Using an air operated whizzz wheel, I cut the 1 side off the tower, filed notches for the retainer plate, and drilled 2 holes for the retainer plate screws modifying the top of the tower to accept a regular bolt on handle.