I like the idea of using a renewable resource. I chose to re-route my exhaust through the cab. It serves two purposes. Keeps the exhaust above the cab when plowing and backing up and provides heat.
<img src="http://www.tractorbynet.com/forums/attachment.php?attachmentid=293859"/>
<img src="http://www.tractorbynet.com/forums/attachment.php?attachmentid=293860"/>
<img src="http://www.tractorbynet.com/forums/attachment.php?attachmentid=293861"/>
<img src="http://www.tractorbynet.com/forums/attachment.php?attachmentid=293862"/>
Here it is in action.
http://www.youtube.com/watch?v=0g30nijylf0&sns=em