This is the section that needs to be fabricated...
I traced the missing innerfender to the back of the outer fender skin.
I used this to make a paper pattern of the patch.
I transferred the pattern to a piece of sheet metal.
Cut and formed....
...and checked against the outer fender skin for fit & shape
The outer & inner panels are lined up & the torsion bar access hole is located...
....and is cut out, then...
taked into place.