Thanks ssalty. I think it's getting there. I wish I could portray the depth better, but oh well.
I did forget to post one pic last night. Here is the back of the closed loop. I'm sure your asking yourself what the heck are the big holes for... Well I had to cut the larger holes on the backside so that I can caulk the inner-side holes so that no air is pulled or induced from this area of the tank/garage. I will patch the larger holes and caulk this side also. Given a few weeks and the entire wall will be painted and you won't be able to tell the large holes were there. Otherwise, the DC8, ballasts and various other nick-knacks will go on the shelf and wall.