Virgin to Chicago

[Level bust]

Can anyone tell me what type of A340 Virgin are using to Chicago. I am due to fly out in 3 weeks time and on the seating plan it is a A340-300. However, I have noticed over the last few weeks it has been an A340-600 on occasions.

[firstchoice7e7]

This link may be useful to you

Which Aircraft Will I Be On? : V-Flyer: The Flyer Resource for Virgin Atlantic and Virgin-Branded Travel Companies (http://www.v-flyer.com/chance.asp)