Hi George,
I'd say the Blizzard & Polar Pkg's are fairly similar, although the newer model (Fusion) may have slightly higher insulation values. Hopefully some the Fusion owners can answer you too, but in the meantime here's some info:
Blizzard Pkg, Page 12: 2010 Brochure
*R-31 Insulation in Roof, Floor, and Front Cap
*R-24 Insulation in Slide-out Floors
*R-9 Side Walls
*Ducted heat into underbelly, storage compartment & garage
*Vented attic
Other info within brochure:
*Enclosed Underbelly
*Heated, Insulated, Enclosed Holding Tanks
*Enclosed Termination Valves
2010 Fusion Brochure (dated Oct 2009)
http://www.keystonerv.com/media2/doc...hure093009.pdf
Fusion Touring Edition II (date n/a)
http://www.keystonerv.com/media2/doc...gEditionII.pdf
2011 Touring Edition III Brochure (date n/a)
http://www.keystonerv.com/media2/doc...ouring_III.pdf
Notes additional heat in garage
Terri, the Chevy co-pilot [& DH Kevin]