The 06 V6 is a little heavier than yours I believe, but I have been using 16" Bridgestone Blizzak W60s on my 06 pony package for the winter. I did buy the tires on a set of 16" rims from TireRack.com because I didn't want to expose my pony package 17" wheels to the salt up here on the roads in Northern New York. I was VERY pleased with the way the Mustang handled during the winter on the Blizzaks, however. I went studless, but I am sure the studded tires may actually see even better control than I have witnessed.
__________________ White 2006 Mustang 4.0L V6 w/ Pony Package
- Cervini's Concept Hood (2-tone) w/ Functional Ram Air Kit | BBK Cold Air Intake | SCT SF3 Tuner w/ 91 Octane Performance Tune | GT-style Grille w/ 6" Fog Lights | Performance White Exterior | Gloss Black Rear Spoiler and Blackout Panel | Black Leather Interior | Carbon Fiber Dash Trim |