here is my solution to the tunnel opening. It will let the exhaust stay cool but keep the snow/melted snow contained. I leak tested it and it is water tight. Hey guys here are my finished and installed panels http://s138.photobucket.com/albums/q274/checkman39/
I love where I work, free metal and tools, took me an hour to design and build and install. And they are water tight I hit all the joints with the garden hose and there isn't any leakage.

Looks great. You are very talented. You should go into business doing this.

I do sled repairs and custom motors, etc on the side. Good to hear

What would you charge for the above, and how can I contact you to get it?

How did your mods preform??