HackerF15E, it is a birdcage, notice the little bubble on the front of the sliding canopy. That is a telltale sign of a birdcage corsair.
The first Corsairs had a full birdcage canopy:
As an interim fix, the canopy was later changed to have the "bubble" seen on the salvaged aircraft. I want to say it had an improved rear view mirror inside of it. Later Corsairs (F4U-1D and later) incorporated the more well known "Malcom Hood."
Goodyear made the F2G-1/2 Corsair as a low level interceptor to counter the kamikaze threat. In addition to a monster engine, it also incorporated a bubble canopy and a cut down tail similar to the P-51D and P-47D:
@Ryan: Who were the other builders apart from Goodyear and Brewster. I thought it was just those two.
Vought built F4Us, Goodyear F2Gs, and Brewster F3As. According to Wikipedia, Brewster didn't do a very good job:
"Just over 700 were built before Brewster was forced out of business. Poor production techniques and shabby quality control meant that these aircraft were red-lined for speed and prohibited from aerobatics after several lost their wings. This was later traced to poor quality wing fittings. None of the Brewster built Corsairs reached front line units."
