You would definatley need access to another mill. I had to take quite a bit out of the table and mid bed to accomodate the ballnut, There is very little difference between your and mine. Being more carefull than me choosing the right type of nut, you maybe get away with not machining but it is tight. If i get a chance i will grab some more pics with some details. I decided in the end to utilise the rack and pinion on the column and reduce with a 72:24 pulley. Not a lot of room to mount on the back of that column though.