Here's the cringe shot boys! Snip snip!
So much room for activities!
Then a bit of a tedious process of trimming the inner panel to match the profile:
Then just bent up a bit of panel steel and cut it to the profile
Got it fitting really nicely inside and out:
Welded it inside & out:
Then made a little triangle to join the (lower rear bit) of the original lip to the new strip of metal, and make it look as factory as possible:
Vuola: