With the exception of some harness adjustments, I think she is ready for the water. I can remove the wing and use a Seatec collar depending on the mood. I know it isn't very vintage but it is super cool.
*UPDATE* Not a fan of the wing. Makes the unit not look right and makes hose routing harder. Going to stick with the horse collar.
I have one of these manifolds and is a current project. What I've found is that Luxfer made 30's in 4,87 and 5.25 inch diameters. The 5.25 diameter are too wide and cant be used. The 4.87 diameter 30's will give you just enough room to get a #12 bolt between the tanks to make bands.