Welcome jaw111 -
Big Sky was the "upgrade" unit of the Montana line during that time, so, generally
speaking it should have all of the options/bells & whistles for that model year.
We've never owned a Big Sky, but if it's been well cared for, I'd think/say it
would likely be a nice 5th wheel.
Here's the 2008 brochure, which should give you the specs/info.
http://www.keystonerv.com/media/7733...ochure.pdf.pdf
On edit: Congrats on your purchase
The 2009 brochure isn't available in the
archives, but you could compare this 2010
http://www.keystonerv.com/media/7733...ochure.pdf.pdf
Terri, the Chevy co-pilot