Thinkpad X1 hybrid and 3G (and other questions)

[mandrakkio]

I have a doubt: the old Lenovo ThinkPad X1 hasn't the possibility to have the WWAN 3G module installed, has it?

Apart from this, are there some X1 models without the option to install the add-on module or all of the X1 family (apart the Hybrid version) could subsequently be enabled by installing a Gobi or Ericsson module?

Finally: what was the most powerful processor for the original X1 family that you could choose (CTO option)?

Thanks in advance.