This is the brand new Earther fighter in the "Nightfury" lineup. This is the SK-37 "Pit Viper". The most advanced Earther fighter to date. It's nearly half the size of a normal Nightfury, but with twice the speed, twice the fire power. With a cruiser able to carry say, 40 Nightfury's, with the Pit Vipers, they can carry 60. Now that does change the odd's in a fight a bit.
The Pit Viper does have one drawback though. Range. At full burn the Pit Viper's range is roughly 80% of a Black Omega. But there is an upside to the Pit Viper that the normal Nightfury's can't do, They can be put on racks on just about any ship or freighter out there. So a freighter once seen as easy prey, now could ruin your life. Imagine a freighter with 6 of these. With their speed and firepower they would make the fight feel like you were up against a standard squadron of Nightfury's. Only you wouldn't have a chance to get away.
Restricting to FED material only. Details and the meer size of these make WSF material out of the question. But I wanted to put a nice, mean and really nasty fighter out there in the universe.