Well I fired up the tig welder and made a bracket to mount the return air fan too. Anchor nuts were mounted to hold the bracket and then the Attwood blower H20 fan was mounted. The flange to hold the hose will be here next week and I will finish this off. The door for the Naca had an aluminum tab bent and riveted on with T88 an flox that will slid into the slot at the back of the Naca scoop. Next was to hold the front into place so after drilling the hole I riveted on an anchor nut to a peace of aluminum which was then structurally glued into place and will have 2 bids put on.