I've welded panels, cast iron, aluminum, stainless, ...with a MIG, I've stick welded all but the aluminum the same, stutter boxes, guns, I've Oxy/Acetylene welded steel, cast,
brazed, soldered everything from plumbing to an old Zildjian Amir Ride Cymbal that had the nicest tone for certain songs, takes some heat and quench to bring the tone back
but it's still there for about 3 songs worth of recording.....then it needs done again,....no they're not just "out there" to find.
The s#*t that's done to the cowling(which is the least of this things worries) would make cutting it off at the welds & repairing it, then re-installing it..correctly, I say at least
3 days of honest effort. Anybody can MIG the holes shut & grind & fill/block, but what's on the back-side.....? S#*T, that's what.......the car is a disaster & if not done right
will be a rip-off to the recipient of a "flip" ordeal....