Very nice setup, thanks for letting me know in my thread. I plan to keep the factory HU so that I can keep the use of the steering wheel controls. I am now toying with the idea of moving the HU into the lower compartment of the armrest. It gets warm in there too but I think the HU will handle it. I won't know for sure until I have the computer in hand and have a chance to do trial fits like you have been doing.
What do you plan to cover the plywood with?
P.S. Yes, I am the same RESET that is on several Fusion sites as well as Cardomain.