I think you will find the 4.8 to be VERY good in the snow, as long as you fit it with 18" winter wheels and tires. I think there are some articles on this site to that effect.

I would also get the H&R 30mm spacers for the rear when going with this setup. Otherwise it simply looks awful.

I have all of the above with very low miles on them, no longer have my 4.6 and will unload them to someone who wants to come pick them up for a more than reasonable price.

However you decide to proceed, good luck!