Actually, Meteor appears to be just 1 cm (0.39 of an inch) longer than the AMRAAM, i.e. 3.67m for the Meteor against 3.66m for the AMRAAM.
That's what the sources I found say:
http://www.mbda-systems.com/mbda/site/ref/...amp;page_id=105
http://en.wikipedia.org/wiki/AIM-120_AMRAAM
So I guess it won't be much trouble in terms of size to fit the Meteor in places, where the AMRAAM already fits
To Spiff, a quote from the first site:
"It is being integrated on Europe’s major platforms, Eurofighter Typhoon, Gripen and Rafale. It also has the potential to add to the air-to-air capability of other combat platforms including the F-35 Lightning II.
The METEOR programme sees the UK, France, Germany, Italy, Spain and Sweden joining together in order to provide access to technology and expertise across Europe."
As FC said, it's all about a simple ini editing to add the METEOR in the Loadout file.
Realism is another issue
Svetlin