Instead of bracing the door opening I mounted the door and used wood shims to control the shape of the opening. That way I could see how the door, cowl,and rocker would fit together. I ran my braces from the seat frame up to the firewall to keep basic shape. Putting it together with sheet metal screws or rivets and test fitting before welding I found to be good advice.

http://rides.webshots.com/photo/1377796476023244788cRZmNZ


1952 1300 Canadian 1/2 ton restomod
You Tube