Wasn't happy with the orientation of the scat tube coming out of the stock heat muff so I ordered a custom muff from Custom Welding Products via ACS that orients the exit duct at 135 degrees from the intake duct. This will provide a much better way to route the scat tube to the cabin air duct around instead of through the engine. Made a rough sketch of what I needed for the manufacturer Dave Edwards. Gotta like a guy that has my same first name uses my middle name as his last name. :)