I was thinking that the chuck was missing. Apparently the south bend doesn't need it and I have all the parts to use it. the draw bar is the wheel looking object in the upper right of the collet picture.tightened my head stock belt, and things seem to be running better. Also had to adjust the level of my setup. I tried to make HP pins for my next mold and everything was tapered. I think I got it good to go now. I'm seeing .002" of runout at 16" from head stock while running and unsupported. dead center close to the headstock.Had to go pick up my original Bob's Boat tail mold from the machine shop being decked shorter. That looks awesome and going to be casting some for testing tonight.
Ok, so it appears the headstock is mt3. The collets are 6k which are rare as hens teeth. There should be a pin in the spindle threads that is 1/8” in diameter to key the collets, but is usually snapped off on older machines. So no collet chuck needed and I seem to have all I need to use them. The pin that keys the collets will clear a normal mt3 center, but has a tendency to cause issues when trying to use the adapter to go down to a mt2 center.