100% stock, no DLC needed. Flying will be weird because of the torque the prop creates, and it yaws and rolls all over the place when you maneuver. It will do 50m/s in level flight, and can go up to 80m/s in a dive, which is much less than the actual thing, but since this is Kerbal scale I’m willing to chalk that down to this being a warbird
replica of sorts, like the half-scale replicas that plane builders occasionally make.