Good day everyone, noob here seeking some guidance on tooling and possible alternatives. I have recently purchased a jet 1236 lathe from the 80's and a zay7045fg/1 mill with a MT4 taper spindle. I am trying to find an MT4 shell holder, fly cutter and boring head. The guidence/advice I'm seeking is there an alternative holder I can use in place of an MT4? I have been having a hard time finding anything MT4. Thank you for taking the time to help this uber noob. (Attached is my current shop layout, just for poop and giggles)