I had this idea for using a turned center, gripped in the sub spindle chuck, and placing it (in program) into a standard boring tool holder to continue the work transfer for the 2nd end machining opp.

1) Main Spindle - face off and center drill.
2) Bring the center (located in a nylon bush of boring bar toolholder) down to X Axis centerline.
3) Open sub chuck jaws and advance B Axis over spiggot dia.
4) Close sub chuck and retract center spiggot from holder.
5) Send turret clear in X
6) Syncronize spindle speeds.
7) Advance center to locate the center drilled hole of part.
8) Complete opp 1 turning.
9) Pop the center spiggot back into toolholder.
10) Advance B Axis and transfer the part.
11) Complete 2nd end.

Are there any other/better methods out there ?