Gentlemen, feast your eyes upon the Black Talon. This glorious bird is capable of achieving speeds upwards of 1,000 meters per second, or around Mach 3 (making it faster than the SR-71 Blackbird) in a 90° vertical climb. I replaced the Mk.1 cockpit on a Ravenspear with an advanced cockpit from BDArmory (I'd been planning to make it a fighter jet), and gave it intakes and engines from RetroFuture. It can exit Kerbin's atmosphere (wasn't able to make it into low orbit, but I did get past 100,000 meters.) just on its jet engines. Not the most original design, but I'm still proud of it.