FSX/P3D. Well that was fast! But this is not just some Mustang. This is the P-51H High Performance Mustang! It's been a while since we have seen anything new come out of the hangars of the Aircraft Factory presented by A2A Simulations and if you are not fully sure what Aircraft Factory is, i'll tell you. Aircraft Factory is a line of products developed by independent developers with a high level of talent. These are very much high quality payware addons that is then published by A2A under the Aircraft Factory label at a reasonable price point. So you won't be getting an Accu-Sim level product here but something good nonetheless. Get yours now! $19.99!