I found the motor dimensions here
http://www.cnczone.com/forums/attach...6&d=1269503728
The 1100W motor will be a good fit for the X2, if its the 92mm size, with some extra column support and a good base for the mill to stand on. I'm going to get one for my X2... see here
http://www.cnczone.com/forums/showthread.php?t=111980