Working on LM drop dpindles now. No pictures yet as I am still in the design stage. The prototypes will go on my 65 Monza and my friend Mikes' 66 Monza.
I do know these will require a change to disc brakes. The drum backing plate will not fit on the drop spindle.
The drop that I am working on will finish out at 2". These spindles will also raise the upper control arm 2" for more usable camber change during bounce/jounce movements.