Find a left and right used door and cut out the sheetmetal around the handle assy and weld it in...that will be a start for ya...
if you can get a junk door with complete latch assembly, it will be easy to duplicate the geometry needed for the A body door. if the latch is not there, at least you can get an idea of how much difference there is in the latch location, compared to the location on the A body door. then go from there.
if the location[s] is off just a very small amount, maybe less than, or around, 1/2", possibly just raise or lower the handle pocket the amount needed to use the complete E body linkage with slight "tweeks" may work.
