The stock suspension on the MS6 is plenty capable of large amounts of snow. Just look out for all the Evo and STi guys giving you a hard time about being a 4x4.
14"? Thats play time! Haven't found 1 time that I couldn't make it out on the streets and my car is lowered haha. Although doesnt matter what system you have don't attempt to go through frozen snow....
I can't wait for first snow here. I have my new Eagle GT IIs on the car. It was good in the snow with Exclaim UHPs (summer tires), it should be AWESOME with these.
And we now have our Grand Cherokee to play in the white stuff too.