Also in agreeance. I have a cast model of the SR71 and it truly would be a wonder to see in real life. If I remember right, it had a cruzing speed of somewhere above Mach 3 and could reach Mach 4.
I can recall a flight simulator game of the 1980's that had this plane as an option. If you flew it at the correct elevation and at full power, you could fly it into lower space where it would tumble for a while before falling back to earth, but banking too fast would rip the wings off
I think the game was called AFS.