I saw this airplane online recently and the description said it didn't do Mach 3, so, as any irresponsible American would do, I decided to fix that. I replaced (one of?) the VTOL engine(s?) with a modded version with 10x power, made by Walrus Aircraft and two of the seven medium jet engines with 10x engines, also by Walrus aircraft. I didn't like that it practically jumped off the runway, so I made the engines need to be activated after takeoff. Press one to activate the VTOL afterburner, press two to activate the outside engines, and press three to activate the inside engine. I have got this plane to 2000 miles per hour before it ran out of fuel. Mach 3 is about 2200. It can get there, it just needs more fuel. Keep in mind that with all engines flat out, you have about a minute of flight time and a 94.6% chance of being vaporized when turning or even for no reason at all.