I was browsing Harbor Freight web site and came across what appears to be an X3 made for Central machines. It has less travel on the X and Z axis, but everything else looks identical to the other X3's.
http://www.harborfreight.com/cpi/cta...emnumber=93885
OHH! the other difference I found was it comes with a 1 hp motor instead of the 3/4 hp motor that came on mine.
If I ever need to replace mine, it might make a good replacement motor (more power, more torque).
Can you just order a motor from HF?
Later,
Jack