Did this half myself and then finished by local auto body shop. Chopped the fender in half short as i wanted then took the remaining piece and welded it over top of the other part with the HOLE for the ECM. I welded it together myself and I think it turned out just fine. Small town body shop guy sealed it and painted it, in a base clear while smoothing it out. Cost 300 cash but im happy now.
Interesting way of "patching" up the ECU hole, and to me looks unfinished even though it's painted. Maybe I just don't quite get it. Anxious to see it mounted up.