I just figured out how to change the sled skins in the new version of the game. I'm a cat man and now I can have a sled that looks like a Cat...funk yeah!!!!! I figured out how to edit the suit skins first and then did some digging and went from there. I also have a hillclimb track. Not sure if I got it from here or not.
Let me know if you want sled skins, or player skins, or the hill climb track. I'm going to go look for more tracks now.