| Tail Number / N-Number | N991R |
| Manufacturer | NORTH AMERICAN/AERO CLASSICS |
| Model | P-51D |
| Year Built | 1993 |
| Manufacturer's Serial Number | 44-74536 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | ROLLS-ROYC |
| Engine Model | MERLIN |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 1,760 hp (1,313 kW) |
| Average Cruising Speed | 277 miles per hour |
| Type of Registrant | LLC |
| Owner Name | HISEY AVIATION LLC |
| Street | 11844 MILL HOLLOW CT |
| City | OKLAHOMA CITY |
| State | OK |
| Zip Code | 73131-7523 |
| Region | Southwestern |
| County | Oklahoma County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2021-08-07 |
| Certificate Issue Date | 2009-10-07 |
| Last Action Date | 2021-08-23 |
| Expiration Date | 2028-08-31 |
| Status | Valid Registration |
| Mode S Code | 53353721 |
| Mode S Code Hex | ADD7D1 |