The majority of the '30 model convertible window frames all look alike, they even share some of the same parts, because Briggs made a lot of the convertibles... See my 9/17/10
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The similarity ends when you try to use a window from another make of vehicle in your current project.
The majority of the convertible window frames made during the '30 were a thin stainless steel cap over a mild steel frame.. My repairman told me that to try and repair the original frames was like trying to 'repair cigarette paper'..
I tried several guys that said they could make me new frames.... Wrong!! In both cases they tried to form the new frames by cutting and welding them to get the shape.. The result was totally unacceptable frames..
The man that made my frames modified one of his metal working machines so he could form the S/S channel, drawing it through a die he had made for the machine. He then made a 'buck' template to form the shape, stretching and/or shrinking as needed..
Not cheep, but worth every dollar I paid....
On a side bar.... There are a few people here on the Ford Barn that will tell you to take your comments and/or questions else where, I pay no attention to them.. Any question deserves an answer.... Well almost any question...