Make sure you didn't loose any wheel weights, I've seen that happen.
I have to be honest the Crossfire is one of the better rear wheel sports cars I've driven in the snow but I just leave mine at home when its bad out, you may not have that luxury. My only advise is to go it slow, especially in a lowered car. My son has his car lowered and he lost it last night in the snow. Fortunately it skidded in a straight line and didn't hit anything. My best advsie would be to take your car in an empty lot over the weekend where there is snow and practice, get a feel for the car. You just got it and you can't "know " the car yet. We want you around in the spring. Keep in mind body parts are hard to come by these days.