Tim,
If your interested I have a 1340 that I converted to cnc and ballscrews.
I am converting it back to sell it.I have had to go to larger machines.
I will sell the complete setup including the ballsrews and cnc setup plus the computer with MACH 3 ready to put on your machine.You will have to shorten the x axis ball screw but I believe everything else is the same.
I also have the rotary table with a stepper motor that runs off the cnc setup.
It is home built and uses gecko drives,check out Smithys' cataloge my machine was featured in there.
It all works very well,I can send you photos of a cnc router that I cut alot of parts my Mastercam on my Smithy.
If you live near Ohio you can come and try it out.