Sierra Sue II is a World War II combat veteran P-51D-20NA. She was in very nearly original configuration at the beginning of the restoration. No "jump seat" behind the regular pilot seat has ever been installed. We believe the airframe was one of the most intact, original P-51s known.
This particular Stearman N2S-1 Bureau Number 3347, Serial Number 75-1124 is one of five known to still exist that were flown by President George Herbert Walker Bush as a cadet in the Navy.