Convertible Frame

Well in reviewing my previous post I also failed to mention that my 71Sb conv. will need a complete new top and conv. frame, as the original is just to far gone. The only company that I have seen that makes or repairs old conv. frames is "chucks"(vw trends DEC. issue). I can make anything so all I really need is the specs. So does anyone have them or have a source for them, the frame is so bad that it is stuck and missing pieces (due to rust). This is my first attempt at a conv. restoration so I want to due it right(otherwise I will get wet. lol)