Decided to run the 1 inch ducting from right below the heater down the middle and stack them on top of each other so that wire bundles coming up from the center channel can get around it a little easier. Since the center channel boost pump will be replaced with the wing root boost pump solution, it left this center area free to run the heat ducting. Ordered a flat piece of 1/8 ABS plastic to create some brackets to hold the ducting in three places along the channel. The goal is to stay away from the wire bundles, rudder cable, and fuel lines to create a middle tier to run the ducting along. Added edge protection and ran ducts out the needed holes behind the main spar for connecting to the eyeball vents for rear seats. Probably 1/3 of the time at least was spent determining how I wanted to run the ducting and considerations for other parts and 2/3 doing the actual install.