Welcome cof,
The Airstream website has recently improved the information available.
Click here to Download a Full Specification PDF. This link is from the Specifications page in the Classic section.
Colonial Airstream in NJ provides a very informative type link, though
this version still seems to be 2003 models. It might prepare you for the full explanation you will get by kicking tires at a dealer. Now if only I wasn't working Tuesday!!!
Enjoy,