04 rev 800 is the sled and the previous owner stretched it to a 159 but didnt put a tunnel extension on it so it still has the 144 tunnel and cooler. The track is actually longer than the bumper so i have a bungie strap holding the flap up so it doesnt get sucked in. So while riding i have to get off and throw snow on the tunnel to cool it off even when in decent snow(not deep powder tho). Would an extension help throw more snow towards the cooler or do i need a longer cooler as well?