This seems to evacuate a lot of hot air under the hood and the price is right ($2.50). I just used two rubber bushings (1/2") tall from Ace Hardware and bolted them to the cowling. Leaves a clean looking thin vent for the motor heat to espace from under the hood. While the sled is in motion you can actually feel (with your glove off) the heat coming out from the vent. It doesn't effect the way the hood fits either. Just another idea for those of you looking to reduce the heat!!!!!