I can't tell you what you SHOULD do, only talk about what I do, You can do as you like.. I have found over the years that it is a very good practice to leave off the clips in the center of the frames... Buy yourself a strip of 1/2 round steel stock, only a couple of feet are needed.. measure from the bottom of the lower frame to just where the top frame starts to curve.. that is a good length to cut the half round stock, one for each side. Now with the frames laying on a table, frames touching each other in the center, hold the stock along side to make just where the bolt holes should be drilled and tapped, at 5/16" course thread.. if the stock holes do not line up with the hinges now, without the clips, thats OK, just long gate those holes with a file or air grinder, be careful as the metal is thin and you can wreck the whole thing if you are not real careful here... Use 5/16: X 1" allen studs to screw into the stock, inside the frames, same goes for the posts, if the 1" are too long at the hinges, use 3/4" length. then add the hinges and use 5/16 lock washers and either Brass dome nuts, or steel dome nuts to tighten everything together... I like the windshield glass to be 2 pieces, looks original and an older look, not a bay window look. Any Ford parts obsolete should carry the h rubber for the center strip, and the glass shop uses a thick felt/tar type of material to keep the glass from touching the steel frame, as that would crack the glass right away... Why the half round stock?? to make the frame one piece in a way, as the wind has a lot more power than you could hold with only the hinges, OK for 30 MPH, but that is all, now use a good set of brace rods, to the frame, from the hinge area, mounted in rubber at the frame, and you will be stylin, ready for the freeway..
the hinges just look like they will fold, but will not... Just me here... Happy cruzin...