These days i would run out of talent on a 400 fan cooled haha.you just need to grab any stock turbo sled, they're on another level and in all reality, any of the stock 850 mountain sleds, you'll run out of talent before you run out of sled. Unless your an avid sledder and have spent some time on late model machines, even a stock turbo will blow your mind. The lightweight turbo 900s those pro are running are above my ability and I have spent my share of days on the mountain.