FS2004 North American P-51 Mustang Update. This is an update for FS2004 of the Alphasim P51 Mustang. The author has updated the flight dynamics, changed the 2D background slightly, changed the GPS, added a nav/GPS switch to the nav panel, and added two other gauges. This aircraft is much easier to fly than the original. If you want realism, stick with the original aircraft. This is the whole aircraft. By Bob Chicilo. 13 Mb